Mission: Hawaiian Islands Cetacean and Ecosystem Assessment Survey (HICEAS)
Geographic Area of Cruise: Hawaiian archipelago
Date: September 1, 2023
When referring to sailing knots, the bitter end signifies the end of the line (i.e. rope to non-seafarers). I thought this fitting, considering the conclusion of my rich time at sea! From interacting with the different deck crew, I learned different ways to tie knots—sometimes the same type of knot. For example, though I knew the bowline before I set sail, I didn’t have a process that stuck in my memory. With the aid of the crew, I solidified a process for myself. Exposure to different ways to tie a knot (or in the case of the mathematics classroom, different ways to approach a problem) gives the learner autonomy to choose a method that suits their learning. I also learned how to splice. See pictures below!
Adult Brown Morph Red-footed Booby. Photo Credit: NOAA Fisheries/Michael Force (Permit #MB03330)
In the final week, all science teams (birders, marine mammal observers, acousticians, plankton team) wrapped up and prepared to disembark the ship. Traveling a total distance of 4,819.2 km, Leg 2 spanned 28 glorious days at sea. The cetacean team tallied 90 visual sightings (visually identified 15 species) and 122 acoustic detections. The seabird side saw 37 species and 4,124 individuals. The plankton team completed 39 net tows on Leg 2 and totals 44 tows overall. The images below from the HICEAS Map Tour page detail the specific cetaceans sighted and heard. I also include some cetacean photos taken by the marine mammal observers (MMOs).
False killer whale (a priority species) catches a Mahi-mahi from under sea trash (bucket lid). Photo Credit: NOAA Fisheries/Ernesto VasquezBottlenose Dolphin. Photo Credit: NOAA Fisheries/Gail Tang (Permit #25754)Cetacean Sightings and their Locations. Photo Credit: NOAA Fisheries Map TourAcoustic Detections and their Locations. Photo Credit: NOAA Fisheries Map Tour
The plankton team completed 39 tows in leg 2! Photo Credit: NOAA Fisheries/Gail Tang
It was an incredible experience to witness science in action. I often referred to my time at sea as “Science Camp!” Cruise leader-in-training, Yvonne Barkley (featured in this previous blog post), briefly interviewed me for the HICEAS 2023 Map Tour. Aside from the science, she asked me what I’ll bring back home with me from this experience. I had to incubate on this question and after some reflection, realized that what I’ve gained are all the connections I made with my ship mates.
Gigantic mahalo to Fionna Matheson (Commanding Officer). We had many conversations during the Conductivity Temperature Depth operations and over meals. We bonded over being women in leadership positions, as well as sharing family stories. Thank you for a smooth cruise!
Gail Tang (Teacher at Sea) and Fionna Matheson (Commanding Officer) sharing a meal in the mess. Photo Credit: NOAA Fisheries/Suzanne Yin
Personal Log
My true purpose on the ship was to create crossword addicts. I love collaborating on crosswords, so I brought a book of Monday-Friday New York Times (NYT) crosswords on the ship. The book mostly stayed up on the flying bridge where someone “off effort” (someone not currently observing) would read clues for the marine mammal observers on effort. In many of our jobs, listening to music, audiobooks, podcasts, etc, help us focus on the work at hand; similarly, pondering crossword clues helped the MMOs concentrate on searching for mammals. By the end of the leg, Andrea Bendlin (MMO) printed out a clipboard full of more NYT crosswords, and both Suzanne Yin and Paul Nagelkirk (MMOs) made their own crosswords that incorporated both the science and the science team members. I’d say I left my legacy!
Gail Tang (Teacher at Sea), Marie Hill (Cruise Leader) and Alexa Gonzalez (Acoustician) crosswording on the Flying Bridge. Photo Credit: NOAA Fisheries/Andrea Bendlin
Alexa Gonzalez (Acoustician) was one of my roommates! A Bachelor of Science in Marine Biology at University of Hawaii, Manoa initially brought Alexa from sunny California (Santa Clarita! We’re practically neighbors.) to sunny Hawaii. During her time at school, she volunteered for the Pacific Islands Fisheries Science Center (PIFSC) doing data entry and some monk seal responses for the Hawaiian Monk Seal Research Program. She also participated in outreach and marine mammal response for the Protected Resources Division of NOAA Fisheries Pacific Islands Regional Office. After graduation in 2018, Alexa had a fun job working on a tour boat wearing many hats as a deckhand, snorkel guide, and bartender. In 2019, she worked on monk seal population assessment efforts at the Hawaiian monk seal field camp at Holoikauaua/Manawai (Pearl and Hermes Atoll). Right after, she was recruited by the Science Operations Division to fill the role she’s in now, Biological Science Technician. She participates on different research projects at PIFSC as a diver, small boat operator, acoustician and lab tech. Below, you can see a photo of Alexa as a small boat operator on Malia.
Alexa Gonzalez (Acoustician) driving fast-boat, Malia, with Erik Norris (Acoustician), and Gail Tang (Teacher at Sea). Photo Credit: NOAA Fisheries/Gail Tang
Pizza and Mexican food top Alexa’s favorite food list, so what’s better than the fusion of the two at one of her favorite restaurants Asada Pizza in Sylmar, California. She loves to get the nopales pizza, topped with jalapeños and cilantro. Yum!! In my time with Alexa, I’ve come to learn the meaning of a quiet sort of connection. We didn’t have to converse much to enjoy each other’s company whether we were decorating Styrofoam cups to crush, playing guessing games in the acoustics lab, or doing crosswords! The lengthy down times made me very thankful for Andrea’s nail polish. Alexa and I had a spa night in the forward mess with Jason Dlugos (3rd Assistant Engineer) and Paul Nagelkirk (MMO).
Teacher at Sea, Gail Tang, takes a break during the plankton net tow to do MMO Paul Nagelkirk’s nails.Alexa Gonzalez (Acoustician) gives Jason Dlugos (3rd Assistant Engineer) a manicure.
3rd Assistant Engineer Jason Dlugos shows off the sparkles in his eyes and nails. Photo Credit: NOAA Fisheries/Yvonne Barkley
While most of us keep aurally busy while we work with our hands, the acousticians keep their hands busy while listening for cetaceans! Jennifer McCullough (Lead Acoustician) brought a never-ending supply of pipe cleaners to build objects. See some of the creations below!
Platonic Solids are now aboard the Sette!Acousticians Erik Norris and Jennifer McCullough collaborate on Cookie Monster.Cast iron fried egg, butter and toast, spaghetti and meatball (Gail Tang, Fionna Matheson, Alexa Gonzalez)
Food and Career Blog
I will really miss the meals aboard the Sette as well as all the conversations shared. Mahalo to all the stewards and friends who made sure I was fed, especially during teaching hours!
Potato pancakes topped with red cabbage and pork bellyTaco TuesdayMy Last Supper
As mentioned before, I tried to do one small thing that I did not do the day before to break up the routine. This week’s major routine-break involved Hawaiian shave ice, put on by Verne Murakami (1st Assistant Engineer)!! Though I recognize that sweets can taste good, I generally prefer savory, sour, or spicy foods. Regardless, I had a blast making shave ice for others. In particular, Zack High (General Vessel Assistant–GVA) and Paul Nagelkirk (MMO) allowed me to make their shave ices. First, a scoop of ice cream, then some ube. Shaved ice fills the cup, coming to a mound above the lip. Flavored syrups like mango or blueberry color the ice. Finally, a sprinkle of ling hing mui accents.
Gail Tang (Teacher at Sea) prepares shave ice for friends. Photo Credit: NOAA Fisheries/Suzanne Yin
Zack went to maritime school at Mid-Atlantic School in Norfolk, Virginia. Afterwards, he completed an internship on a vessel with the U.S. Navy’s Military Sealift Command. He learned basic CPR, safety and training, completed his Standards of Training, Certification and Watchkeeping. One of his professors sent his resume to NOAA and a year later, Zack started working in Nov 2021 on the Sette! Though he started in the deck department under Chris Kaanaana (Chief Boatswain/Bosun), two months later, he transferred to the engineering department for a different career opportunity. As part of his role as a GVA, he goes on watch, does rounds, goes down to the main control room to take readings, goes up to the main deck to record temperatures of freezers, look for leaks or other signs of disrepair. He hopes to become a licensed engineer with aspirations to go into private industry or another federal branch. Zack is a big fan of weight lifting and loves fishing with Verne, catching big tuna and mahi mahi. He calls himself a gearhead because he likes working on cars and going to car shows. He also enjoys going to see live music; his last show was an underground punk concert in Seattle. He would like to start hiking. Zack likes boxing and he even gave me a little lesson on the ship!
Zack High (GVA Engineering) satisfied with his shave ice!Zach High (GVA Engineering) shows Gail Tang (Teacher at Sea) how to box.
Paul went to Michigan State University and majored in environmental biology and zoology. He became a fisheries observer in the Bering Sea and then later worked in oil and gas mitigation in the Gulf of Mexico to reduce environmental impacts due to noise pollution. In 2013, he started both ship and aerial surveys with NOAA. In the aerial surveys, the plane follows transect lines 600ft over the water.
Paul has also conducted aerial surveys of the North Atlantic Right Whale through the New England Aquarium. The New England Aquarium is the pioneer and premier research institution for the Right Whale. They run the individual ID catalog for the North Atlantic Right Whales (see https://rwcatalog.neaq.org/#/). They know the whales’ relationships to each other since they perform year to year tracking for conservation efforts. Climate change alters the whales’ prey locations, causing them to move farther north towards Canada. Further, they are susceptible to entanglements from the lobster and crab industry as well as collisions from ship traffic because they tend towards the coast. The number of North Atlantic Right Whales left is disturbingly low, about 350, landing them on the endangered species list.
Paul and I became fast friends. I affectionately call him my “worstie”, but he really is a “bestie”. We shared his favorite food (Detroit-style pizza) at Pizza Mamo in Honolulu–I highly recommend! His other hobbies (some of which we share) include Wordle, biking, hiking, and disc golf.
Paul Nagelkirk (MMO) is pleased with his shave ice.
Many Mahalos
A very special mahalo to Cruise Leader 💞Marie Hill💞. Marie’s charm brought much energy to the science team. Her vibrant character will be missed!
Gail Tang (Teacher at Sea), Marie Hill (Cruise Leader), and Suzanne Yin (MMO) during HARP retrieval. Photo Credit: NOAA Fisheries/Suzanne Yin
Regrettably, my career highlights lack comprehensiveness. Give me another month, Teacher at Sea Program 😉, and I could feature everyone. I include some visual shout-outs in the images below!
Darryl Henderson II (GVA-Deck) relents to the pressures of Gail Tang (Teacher at Sea) to decorate for the international date line crossing.Darryl Henderson II (GVA-Deck) shows off his new domain of the golden dragon ‘do. Mahalo for the good times!
Logan Gary (Able-bodied Seaman) deploying the CTD during sunset. Mahalo for all the fun, especially singing Part of Your World on the boat deck! Photo Credit: NOAA Fisheries/Gail Tang
Mahalo, Chris Kaanaana (Chief Boatswain/Bosun), for all your years of service aboard the Sette!
A myriad of mahalos to Kym Yano (Cruise Leader-in-Training) for answering my many questions before going underway and welcoming me ashore with an Ilima and Tuberose lei. I’ll miss you!
Mahalo to all the scientists that cared for me, showed me the ropes, and involved me in all aspects of the science. Every rainbow I see will forever be a reminder of you. Photo Credit: NOAA Fisheries/Nich Sucher
Did you know?
You may be familiar with the duality of the word “aloha”, embodying both a greeting and a farewell. My exposure to new meanings of “aloha” through Chef Chris’s Aloha Kitchen: Recipes from Hawai’i cookbook by Alana Kysar inspired me to learn more. According to the Hawai’i Law of the Aloha Spirit,
“‘Aloha’ is the essence of relationships in which each person is important to every other person for collective existence. ‘Aloha’ means to hear what is not said, to see what cannot be seen and to know the unknowable.”
To all my community aboard the Sette, aloha.
NOAA Ship Oscar Elton Sette through the eyes of Gail Tang (Teacher at Sea). Photo Credit: NOAA Fisheries/Gail Tang
Mission: Hawaiian Islands Cetacean and Ecosystem Assessment Survey (HICEAS)
Geographic Area of Cruise: Hawaiian archipelago
Date: Aug 25, 2023
Science and Technology Log
Visually surveying for marine mammals has its limitations because they spend so much time underwater. To account for these limitations, a number of acoustic techniques are used to study cetaceans (whales and dolphins). There are four main passive acoustic instruments used by the Pacific Islands Fisheries Science Center’s Cetacean Research Program during ship surveys: towed arrays, drifting acoustic spar buoy recorders (DASBR), high-frequency acoustic recording packages (HARP), and sonobouys. Each instrument has its pros and cons so the data from each instrument provide a fuller picture of what’s under the sea.
On board the ship, every morning just before sunrise the acousticians deploy the towed array of hydrophones, which streams 300 m behind the ship. The towed array provides real-time information on calls and clicks of the whales and dolphins. Each section of the towed array has three hydrophones and a depth sensor (see picture below). The design comes from the National Marine Fisheries Service and are all built by Lead Acoustician Jennifer McCullough (to read more about Jennifer, see my previous post). While the towed array can pick up sounds from the cetaceans around the ship in real-time, it also picks up the sounds of the ship, thus obfuscating other calls. As such, autonomous recorders (DASBRs, HARPs, and sonobouys) are used to collect more data, as well as match species data collected from the towed arrays.
A section of the towed array with three hydrophones (seen in purple). Photo credit: NOAA Fisheries/Gail Tang
Acoustician team Jennifer McCullough, Alexa Gonzalez, and Erik Norris deploy the towed array. Photo Credit: NOAA Fisheries/Gail Tang
A depiction of array towed behind a ship. Photo Credit: Barkley et al. (2021 p. 1122)
The HARP is a long-term acoustic recorder that sits on the seafloor at depths of 650-900 m depending on the site. Developed by the Whale Acoustics Lab at Scripps Institute of Oceanography, they are site-specific and sit out for one to two years. The one we retrieved during Leg 2 was deployed August 2022. The HARPs provide 1) time-series data that help with understanding seasonal occurrence of cetaceans and other marine life, 2) periodic data on the presence of animals that pass through the site, and 3) ocean noise reference points. The latter is important in measuring the potential impact of ship and construction noise on marine mammal behavior. For example, slowly over time, blue whales are shifting their call types to a lower frequency to compensate for the rise of ocean noise in their natural call range (Rice at al., 2022).
DASBRs are floating acoustic recorders deployed from the ship and retrieved sometime between 1-30 days later depending on their location from the ship. The DASBR collects acoustic data away from the ship and at a depth deeper in the water column than the towed array (about 150 m from the surface). This means there’s no noise from the ship that may disturb the animals and no surface noise from crashing waves or rain. A clear advantage of the DASBR is its ability to record beaked whale vocalizations, super high-frequency echolocation clicks. Beaked whales are only vocal during the lower portions of their foraging dives, which last for about 60-90 mins. On the ship with the towed array, we don’t spend enough time to capture their vocalizations. The DASBR on the other hand has time to capture an entire dive cycle of a beaked whale. Depending on the frequency and amplitude of the animal, the distance at which the DASBR can detect animals (or detection range) varies by species. For example, Kogia (pygmy and dwarf sperm whales) need to be near the sensor and facing it to pick up their calls, while the baleen whales have a larger detection range. To give you an idea of the overall advantages of the DASBR, it can pick up about 10 times more cetaceans than the towed array and help us learn more about their vocalizations and study their habitat range.
With grapple hook in hand and eyes on the DASBR, Matt Benes (Able-bodied Seaman) prepares for retrieval. Photo Credit: NOAA Fisheries/Marie HillThis map shows the tracklines where we surveyed, as well as the DASBR paths. Photo Credit: NOAA Fisheries/Marie Hill
There are many recorded calls for which there is no visual match, so sonobouys are deployed after the visual team identifies a particular baleen whale species. Because the ship masks the very low frequency sounds made by most baleen whales, sonobouys are deployed to evaluate their call types. The hydrophones in the sonobouys are set at 90 ft from the ocean’s surface and they collect data for up to 8 hours.
I like the idea that these four instruments work in concert towards a shared goal, each with its strengths and weaknesses.
Career Log
The information above was provided by the acoustics team. I will focus on a couple in particular, Yvonne Barkley (Cruise Lead in Training) and Erik Norris (Acoustician), who met on NOAA Ship Oscar Elton Sette 13 years ago!
Erik Norris (Acoustician) and Yvonne Barkley (Cruise Lead-in-Training)Yvonne Barkley (Cruise Lead-in-Trainging) working in RErik Norris (Acoustician) calling the HARP
Yvonne Barkley first went to University of California, San Diego and then transferred to Santa Barbara City College for a pipeline into University of California, Santa Barbara (UCSB). At UCSB, she studied aquatic biology. A friend told her about a temporary job as an acoustic analyst for a local research firm invested in mitigating the impact of oil companies on the bowhead whale migration through the Beaufort Sea. It is at that job that she received her first acoustic training. On a path towards marine mammals, Yvonne’s cousin alerted her to an internship at the US Navy’s Marine Mammal Program in Pt. Loma, California prepping dolphin food, cleaning, etc. The program itself trained bottlenose dolphins to be swimmer detectors and California sea lions to be sea mine detectors! For example, bottlenose dolphins are used at different naval bases and combat zones to detect anomalous scuba divers. Yvonne was accepted into the internship where a seminar given by a NOAA Fisheries representative piqued her interest about marine mammal research. She found an acoustic analyst internship at the Southwest Fisheries Science Center (one of NOAA’s six science centers). There, she learned about field projects to collect cetacean data at sea for months at a time. In contact with Erin Oleson (HICEAS 2023 Chief Scientist), she embarked on her first mission from Hawaii to Guam in 2010 on the very ship we are currently on! That cruise brought Yvonne and Erik together, but more on that later.
After collecting data that weren’t intended to be used in stock assessments, like a true scientist, Yvonne began to wonder, “How can we use these data?” This curiosity, the advancement of acoustic data collection methods, and the drive to uncover data gaps in the literature converged into a puzzle for Yvonne to solve. I listened in awe as Yvonne described the three main chapters of her doctoral thesis. The first one involved species classification for false killer whales (a priority species for HICEAS). Her research used whistle data to distinguish the whales acoustically at the population level. She found that the classification machine learning model yielded low accuracy rates. Access the paper here: https://www.frontiersin.org/articles/10.3389/fmars.2019.00645/full
The next chapter focused on improving localizing methods for deep diving whales using sperm whale acoustic data. I was drawn to the research of this chapter because of the modeling components. Probabilistic models are used to estimate the location of cetaceans. An ambiguity volume is an example of such a probabilistic indicator. It is computed from source location estimates that are most accurate to the actual measured locations. As the number of different detections for the same whale at different positions from the ship increases, the ambiguity volume decreases, thereby narrowing down the possible location of the whale. The increased location accuracy is depicted in the figure below through the progression of subfigures a) – f); subfigure a) has fewer detections for the same whale than subfigure f). As we move to subfigure f), we can see that the margins of location estimates are much smaller, giving us a more accurate location estimate for the whale. https://pubs.aip.org/asa/jasa/article-pdf/150/2/1120/15349527/1120_1_online.pdf
Progression of ambiguity volumes as detection data points increase. Photo Credit: Barkley et al. (2022, p. 1122)
The final chapter used the ambiguity volumes for location estimates from the previous chapter and available environmental data from remotely sensed satellite data sets that lined up with those locations to learn about the habitat preferences of sperm whales. Check out the paper: https://www.frontiersin.org/articles/10.3389/frsen.2022.940186/full
Erik Norris got his Bachelor’s degree at James Madison University in integrated science and technology. He was initially working with energy production and city planning, dredging company shipping channels up and down the east coast. He left and traveled for a while. When I asked him to share one of his fondest memories, he mentioned his time in a small fishing village called Nomozaki, Japan. What struck him most about this village was the community-oriented nature of the villagers. At the end of the day, local fishermen took a portion of their catch of the day and shared it with the entire village. The whole community came out to have a big party together, enjoying the catch and the company. The expression of an economy focused on people rather than on profits really speaks to me. I am reminded of a couple of quotes from Braiding Sweetgrass by Robin Kimmerer:
“A gift comes to you through no action of your own…the more something is shared, the greater its value becomes. This is hard to grasp for society is steeped in notions of private property, where others are by definition excluded from sharing.”
(Kimmerer, 2013, p. 23 and 27, respectively)
While Erik worked on a boatyard, he saw people working on the escort vessel for the Hōkūle’a, a wa’a (voyaging canoe) that uses traditional Polynesian wayfinding techniques (no technology, not even a watch) to navigate the ocean. (The Hōkūle’a is currently on its 15th voyage. Follow along here: https://hokulea.com/moananuiakea/). He approached the crew and volunteered to work on the escort vessel in-port. When the vessels were ready to commence their voyage, Erik had become so familiar with that vessel that they asked him to join, which turned into a 6-month journey. When I inquired about Erik’s attraction to the maritime industry, he quipped that he’s Moana from the Disney movie. For the sake of research, I had the ship’s movie DJ, Octavio De Menas (General Vessel Assistant), put on the movie. From what I gathered, this quote from Moana’s song “How Far I’ll Go” must represent his draw to the ocean:
“See the line where the sky meets the sea, it calls me.”
Moana
Through conversations with others on the ship, it seems like the ocean has a similar allure for many. Having been out here for three weeks, I get it. We first saw land last week and it felt like an intrusion. Enough about me, back to Erik!
Later, while talking to his friend’s dad who was a NOAA Corps Officer about his passion for the ocean, he joined the NOAA Corps himself. He met Yvonne as an Ensign on the Sette. He went on to become Lieutenant Junior Grade, and then “retired” from NOAA Corps as a Lieutenant because he was about to rotate from his land billet at Pacific Islands Fisheries Science Center (PIFSC) to another land billet which would have taken him away from Hawaii. He found a civilian job in Hawaii with PIFSC as a vessel operations coordinator in charge of small boats, fabrication and design, field logistics, and HARPs. He attributes his entry into the world of acoustics to Yvonne and HARPs. His current interests include using autonomous vehicles (e.g. sea glider) for a range of oceanographic environment missions.
I asked Yvonne and Erik the same questions separately and we laughed about the different approaches they took in their answers. Erik first noticed Yvonne because she was moving equipment and he was in charge of the equipment on the ship. Yvonne first noticed Erik’s sense of humor juxtaposed with her expectations from someone in the uniformed services. On their time at sea, they shared conversations over meals. Erik was captivated by the way Yvonne talked about her oma’s (grandmother’s) Indo-Dutch cooking. For more on Erik and Yvonne’s food connection, visit the Food Log below. Once in Guam, Yvonne was struck by Erik’s thoughtfulness in preceding her on a hike in the jungle so he could clear off all the spider webs; his distaste for spiders elevated Yvonne’s appreciation for his sacrifice. This is not the only time Erik put Yvonne before himself. Yvonne was really sick in Bali and ended up in a hospital in Malaysia. Erik took leave from work and (according to him) flew to comfort her and accompany her home. According to others, he rescued her. With a ring attached to the keyring on his swimming trunks, under a rainbow and surrounded by sea turtles, Erik proposed to Yvonne while surfing. They have been married since 2016. They currently live in their house, Gertrude, with their dog Sweetpea.
Personal Log with Career Highlight
I started teaching this week. Classes are going well! Shout out to my Abstract Algebra students who never cease to amaze me with their curiosity and courage. Brave Space–IYKYK! I told them our picture below looks like the Brady Bunch, which they did not understand so they have additional homework to watch the opening credits.
University of La Verne’s Fall 2023 Abstract Algebra class!
Everyday, I try to do one thing I didn’t do the day before. I had two memorable events from this week. The first was during drills. We have weekly fire and abandon ship drills, so this week a few of us practiced the fire hose off the bow. Below you can see Yvonne assisting me as I cycled through the different spraying options.
Gail Tang (Teacher at Sea) and Yvonne Barkley (Cruise Lead-in-Training) test out the fire hose during weekly drills. Photo Credit: NOAA Fisheries/Ernesto Vásquez
The second non-routine thing I enjoyed was helping Joe Roessler (Electronic Technician–ET) install a cable to the outdoor wifi antenna. Our work is the reason I can compose this blog post on the boat deck in my outdoor office, wind whipping my hair to the sounds of the ships’ wake. We worked in the trawl house to solder connector pins to cable ends. Joe’s approach to teaching is familiar. In my classrooms, I provide the tools for students to solve problems with very little instruction. If they need some, I am there to help answer questions. Joe set up the soldering station, provided the leatherman, rubber tape, the connectors, the cable and we went to work. There were many parallels in his methods and mine. We first attempted a connection to the cable, but the pins were not sitting right. Joe evaluated the situation and quickly thought of a different approach to connect the cables. Trying a solution and then pivoting when it doesn’t work out is a skill we try to develop in my classes!
Attempt 1 of cable connectionJoe Roessler (Electronic Technician) testing the cable connection
Joe got his amateur radio license at 13! At that time, kids were particularly into shortwave radio because of the US human moon landing. As a young adult he went to the Navy for naval aviation aircraft maintenance. After he was discharged from active duty, Joe continued working in the Naval Reserve and also at private sector companies where he tested robotic equipment. Later, he joined the Civil Service as an aircraft electrician at a naval air rework facility in San Diego. He then transferred to the Army at Dugway Proving Ground in Utah where he returned to the position of an ET. Joe worked with a biological integrated detection system for weapons of mass destruction, in biological warfare defense, with instrumentation and testing equipment and research development. He took a short 4-year detour a businessman and realized it was not what he wanted to do. NOAA had openings in Seattle so he applied and was hired! His first season was on NOAA Ship Rainier in Alaska. Having had enough of the cold weather, he asked for a relocation to Hawaii. He worked on our very ship, the Sette, installing equipment before its very first mission! He met his wife in Samoa and has been working for NOAA 22 years!
Joe Roessler (Electronic Technician) in his office! Photo Credit: Gail Tang
Food Log
This week Chef Chris Williams [see previous blog post for more about Chris] made some yummy meals, my favorite pictured below!
Lambchops, fish, avocado, gnocchi, wild rice, brussell sproutsMac and Cheese, collards, fried chicken, pot roastBeef curry, porkloin, broccoli, veggie curry
When Erik first mentioned Yvonne’s Oma’s Dutch-Indo cooking, I was intrigued because I haven’t had much of either, let alone their fusion. Though Erik insisted that all of Yvonne’s dishes are his favorite dish, after much encouragement he narrowed it down to Oma’s croquette recipe. It’s a fried potato dish with meat inside, best when served with Chinese or Dijon mustard. Yvonne’s favorite dish is her oma’s lemper ayam. The moment she mentioned that it’s sticky rice stuffed with chicken inside I asked if it’s wrapped in any type of leaf. After researching some recipes, I found that it’s traditionally wrapped with banana leaves.
Lemper. Photo Credit: Wikipedia
I am going to search for lemper when I get home because I have a certain fondness for food wrapped in leaves. I am particularly tickled by the similarities in leaf-wrapped food across different cultures. For example, there’s law mai gai (wrapped in lotus leaf with Chinese origins), zong (wrapped in bamboo leaf also with Chinese origins), dolmas (wrapped in grape leaves with origins in the Levant), tamale (wrapped in corn husk with Aztec origins), and cochinita pibil (wrapped in banana leaves with Mayan origins). This may be a stretch, but I also like onigirazu/handrolls/onigiri (wrapped in seaweed with Japanese origins) and gimbap (wrapped in seaweed with Korean origins).
There is even a Hawaiian version of a leaf-wrapped food called lau lau! It was the second thing I tried when I landed in Honolulu. Usually lau lau consists of pork and salted butterfish first wrapped in kalo (taro) leaves, which are edible, and then in ki (ti) leaves, which are not edible. Finally, traditionally it is steamed in an imu pit (underground pit). It can be found in restaurants and served at luaus. Though it was new to me, it felt so wonderfully familiar.
Wrapped Lau Lau with a side of Kalua Pork from Shiro’s Saimin Heaven. Photo Credit: Gail TangUnwrapped Lau Lau with a side of Kalua Pork from Shiro’s Saimin Heaven. Photo Credit: Gail Tang
While searching for the history of lau lau, I found a beautifully written memory that describes lau lau as an embodiment of the beach, the valleys, and the mountains through the ingredients of butterfish, kalo/ki, and pig. Not only does the final product connect these landscapes, but the preparation connects families and friends.
“Early Hawaiians lived in valleys that provided them protection and food. Villages were organized by families and by land divisions, which, in old Hawaii, were divided from the beach to the mountains. That meant that each village and family had complete accessibility to the beach and the mountains and all their offerings. Lau Lau represents these familial land divisions because its ingredients come from the beach, the valleys, and the mountains. The preparation was always my favorite part, because we’d be together for hours sharing stories, laughing, and having fun. Wrapping Lau Laus was where we all became familiar with who we were.”
The Big Dipper points to the North Star and the angle of elevation from the horizon to the North star is your latitude! This tip was brought to you by Erik Norris, himself.
Mission: Hawaiian Islands Cetacean and Ecosystem Assessment Survey (HICEAS)
Geographic Area of Cruise: Hawaiian archipelago
Date: Aug 21, 2023
Ship Layout
Leg 1 Bunk. Cozy!The Forward Mess (my fav)The Gym (my least fav)The Mess!The Movie Room!The Snack Shelf! There’s even Pocky!
It’s hard to capture the feeling of the ship with pictures or words, but alas, here is an attempt! The ship essentially has 5 levels. The lowest is mostly the engine room plus a small space for the gym and laundry. The next level (my favorite) is the Main Deck, which has some staterooms but more importantly, the Mess, the Galley (kitchen), and the Forward Mess. The next level is the 01 Deck which houses Acoustics, the E-lab, the survey technician’s office (where I teach), and many of the staterooms (including mine!). Above the 01 deck is the 02 deck where most of the NOAA Corps Officers and some engineers sleep. Then there’s the Bridge where the officers drive the ship in the company of a deck crew member on watch. Finally, the Flying Bridge is the cherry on top! The birders and marine mammal observers do all their sightings from up there.
Michael Force (birder) and Ernesto Vázquez (marine mammal observer – MMO) are two amazing photographers on board. They helped me with the settings on my camera to capture the wildlife (shutter priority, auto ISO, center focus, continuous shots, fine detail). The first photo is a photo of a tropicbird taken by Ernesto.
Ernesto started with one semester at Universidad Nacional Autónoma de México (UNAM) where he was an honors student in his math classes, but failed in other classes. Drawn by his love of diving and the sea, he left to go to La Paz, and started at Universidad Autónoma de Baja California Sur, located next to the waters of the Gulf of California. He majored in marine biology, and took ecology applied statistics, general physics, Calculus 1 and Calculus 2. By his 3rd semester, he started doing community engagement at the university at an AMNIOTS lab, where his interest in cetaceans began.
While he joined multiple projects, the humpback whale ecology was his favorite. It is there in Cabo San Lucas where he learned photography for species identification and how to use the crossbow for sampling. He also became acquainted with specialized software to interpret data, which became a very useful skill for his future.
After graduation, Ernesto went to Ensenada to start his Master’s program. However, the scholarship and program in which he was enrolled disappeared, so he started looking for jobs. His first NOAA project was focused on the vaquita (a porpoise on the brink of extinction). It was a binational expedition in the Gulf of California for 2 months. In 2000, he joined a 3-year project on the eastern tropical Pacific, which was basically surveying a water mass the size of the African continent. On board, he estimated dolphin group sizes associated with tuna fishing operations. Since then he’s been joining similar expeditions that take him to places like the Galapagos and Alaska as part of the biopsy team.
I have such fondness for Ernesto because we shared many meals and many conversations during our leg 1 in-port. He has a calming and reassuring nature to his leadership style. In a subsequent leg of the HICEAS, he’ll be moving to NOAA SHIP Reuben Lasker to be a senior observer! Well-deserved, Ernesto!
Ernesto Vásquez (MMO) setting up WinCruz as the sun rises. Photo Credit: NOAA Fisheries/Gail Tang
I sat with Michael Force to learn more about the Red-tailed Tropicbird. I found out that the mariner’s name for tropicbirds is bosun bird, because their whistle resembles the call of the bosun’s whistle, formerly used to muster the deck crew. The Red-tailed Tropicbird is the largest of the three tropicbird species and is most common in the Papahānaumokuākea Marine National Monument. It’s a ground nester, placing its nest under bushes to help shade them from the intense tropical sun. They love to eat flying fish and will travel far for food to bring back to their chicks. They dive from great heights with a spectacular vertical plunge. They are commonly attracted to ships and often fly around the highest point of the vessel; a goose-like croak will announce that one has snuck up behind us. Adult survival is very high because predation pressure at sea is very low. Rats, mice, and cats are predators ashore, especially for the young since they are unprotected in their ground nests.
Their two elongated red tail feathers were highly valued by native Hawaiians, especially in crafting kāhili. These intricate feather posts accompanied royalty during events like battles, or large ceremonies. Dawn Breese (birder) gave me an extensive tour of the different kāhili at the Bishop Museum while we were in-port awaiting Leg 1. To learn more, visit the links in the reference list below.
Michael’s interest in birding started at the young age of 7 or 8! Completely self-taught, he boarded his first commercial vessel at 16 for a pelagic seabird trip out of Westport, Washington, organized by the late Terry Wahl, a professor and esteemed seabird biologist at Western Washington University, Bellingham. The Westport pelagic trips were famous in the birding community. Using sport fishing charters to take landlubbers to Grays Canyon, an area rich in marine diversity, these trips were always well-attended. As a native of Vancouver, British Columbia, Westport, only five hours south, was a convenient location to reach the open sea and Michael was hooked.
Through Terry, he heard that Southwest Fisheries Science Center (one of six NOAA’s science centers) was looking for a volunteer observer for a 4-month voyage of the Eastern Tropical Pacific, thus began his NOAA journey. He interspersed seabird and NOAA trips with his studies at the University of British Columbia, where he majored in geography. The Snow Petrel is Michael’s favorite bird because it’s a unique Antarctic seabird, closely associated with ice, and is the world’s only pure white petrel.
Michael Force (Birder) using an improvised rangefinder (device to estimate distances to objects). Photo Credit: NOAA Fisheries/Suzanne Yin.
I appreciate Michael’s quirkiness. I once told him that because of my eyesight, I only want to see the cetaceans if they are really close to the ship. He teased, “close enough you can poke them with a stick!” Thanks for the laughs, Michael!
Red-footed Booby catching a flying fish. Photo Credit: NOAA Fisheries/Michael ForceBrown Red-footed Booby polymorph pursuing a flying fish. Photo Credit: NOAA Fisheries/Michael Force
The Red-footed Booby is the only polymorphic (having different color morphs) booby. The brown polymorph dominates the eastern Pacific. Their red feet are a breeding adaptation; the redder the feet, the more likely they’ll find a mate—ooo la la. Unlike other birds, Red-footed Boobies do not use their breasts to incubate their chicks; they use their webbed feet! They also have a secondary set of nostrils to keep water out when they’re fishing and a clear membrane over their eyes that act like goggles. I personally enjoy watching them attempt to land on the jackstaff on the ship because sometimes they put out their landing gear and can’t quite bring it to fruition, so their little red webbed feet just dangle around in the wind, splayed open.
Juan Carlos (marine mammal observer-MMO) likes to see Fraser’s dolphins because they are a rare sight. On the shy side, they tend to run from the boat. Though Juan Carlos has not often seen Fraser’s dolphins with other groups (he’s seen them with melon-headed whales), according to whalefacts.org, they are fairly social and will often hang with false killer whales (a HICEAS priority species), melon-headed whales, Risso’s dolphins and short-finned pilot whales. The other MMOs like to tease the Fraser’s dolphins for their T-rex-like pectoral fins.
Coincidentally, Juan Carlos (JC) went to the same college as Ernesto in La Paz! He started observing marine mammals while still in school at a tourist company running dolphin tours. His boats would take tourists out to see the sea lion colony at the north end of Isla Partida, and to snorkel in the Bay of La Paz where there is an abundance of sea life. He got involved with a US program that takes students to La Paz to learn about marine science, specifically marine mammals and sea lions.
JC first learned about NOAA through a UNAM professor and started working on the same Gulf project Ernesto would work on later. JC shared the process of calibrating the marine mammal observers’ counts. In the past, helicopters took photos from above and counted all the individuals in the pods. These actual counts were compared to each MMO’s estimated counts providing a margin of error for each MMO. For example, JC may be consistently 8% below the actual count. These margins of error are considered during abundance estimates. Since calibrations don’t happen with helicopters anymore, there are very few MMOs with their margins of error recorded, making JC a very valuable MMO.
JC has a quiet sense of care. At lunch recently, I put my mug of tea down at his table before grabbing lunch. When I returned, he put a napkin under my mug. When I lifted the mug to drink, I held down the napkin with my free hand to stop the fan from blowing it away. JC gently picked up the napkin and flipped it over so the open side did not catch the wind. I am going to miss my new family!
Juan Carlos Salinas (MMO) packs up flying fish that have landed on the ship. Photo Credit: NOAA Fisheries/Suzanne Yin
I’ve grown accustomed to ship life. I can now tell when there is a sighting without being informed because the ship’s movement feels different and the lighting/shadows often change. To break out of routine, I try to do something different everyday that I didn’t do the day before. This week’s excitement was crossing the international date line (aka 180°E/W) from east to west!
Apparently new crew members who cross the date line for the first time by way of sea are initiated into the domain of the golden dragon. I couldn’t find much on the inception of this sailor tradition, but it seems like it’s rooted in China’s reverence for dragons. As such, some of us got to crafting dragon-themed costumes for the occasion! The pipe cleaners Jennifer McCullough (Lead Acoustician) brought onboard have been crucial for not only keeping our hands busy, but also provided a means to make dragons, dragon wings, and dragon scales.
Science team crossing into the realm of the golden dragon. Photo Credit: NOAA Fisheries/Gail Tang
Plankton Team Sandwich! Jessie Perelman (Plankton Researcher), Gail Tang (Teacher at Sea), Dre Schmidt (Plankton Researcher). Photo Credit: NOAA Fisheries/Jennifer McCullough
Scientists crossing the International Date line by sea for the first time. Left to right: Paul Nagelkirk (MMO), Dre Schmidt (Plankton Researcher), Jessie Perelman (Plankton Researcher), Alexa Gonzalez (Acoustician), Gail Tang (Teacher at Sea). Photo Credit: NOAA Fisheries/Yvonne Barkley
Food Log
Well, it’s happening. The fresh vegetables are starting to diminish! When I talked with my mom, she reminded me to eat more fruit! Though there is no fruit featured in the images below, I have indeed increased my fruit consumption. Thanks, mom!
Avocado, Beef Noodles, Bang Bang ShrimpCheesy Broccoli, Mushrooms, Salad, ManicottiFried Chicken, Mashed Potatoes, Beef, Collards
Can you believe it? An ice cream fridge!
In the Forward Mess, there is an ice cream fridge! I’m more fascinated by the ice cream fridge conceptually rather than gastronomically. I usually sit in the Forward Mess on the counter just next to the fridge so I’ve become acquainted with the ice cream habits of those on board. Some like to just pay a visual visit to the fridge while others are daily indulgers. Fat Boys and Greek Yogurt popsicles (those went FAST) are the most popular. Ben and Jerry’s is also well-liked, but there usually is an abundance so everyone can have what they want. I personally only tried Octavio De Mena’s (General Vessel Assistant) Li Hing Miu popsicle. Though the li hing miu is what made the popsicle good, it was still too sweet for me.
Did you know?
During lunch with Fionna Matheson (Commanding Officer), I learned that the mother-calf pair swim in what’s called the echelon formation. As seen in the photo below, the calf is swimming in close proximity to the mother, between the dorsal fin and tail. This formation is crucial to infant survival as it provides the calf with hydrodynamic benefits and energy conservation during periods of travel (Noren et al., 2007). Now, isn’t that the sweetest?
Calf and adult pilot whales swimming in echelon formation. Photo Credit: NOAA Fisheries/Andrea Bendlin (Permit #25754)
Reference:
Noren, S.R., Biedenbach, G., Redfern, J.V. and Edwards, E.F. (2008), Hitching a ride: the formation locomotion strategy of dolphin calves. Functional Ecology, 22: 278-283. https://doi.org/10.1111/j.1365-2435.2007.01353.x
Premier marine ecologist Dr. Robert Pitman is a member of our cruise. He works at the NOAA Fisheries at the Southwest Fisheries Science Center in the Marine Mammal and Turtle Division. He has traveled the world in search of cetaceans, turtles, flying fish, and seabirds. Currently he is doing extensive work with killer whales. Dr. Pitman has viewed almost all of the 80 plus species of whales known to man; however, seeing some of the Mesoplodon beaked whales in person has been elusive… until now. Dr. Pitman gave an excellent presentation on the different species of beaked whales that we might to see in the North Atlantic Ocean.
The Blainville’s beaked whale was first identified by Frenchman Henri de Blainville in 1817 from a piece of a jaw. The average length of a Blainville’s beaked whale is 4.4 meters. The most prominent feature of the whale is a high arching jaw. Blainville’s beaked whales have scars from raking which heal white. Males are very aggressive and proud. Dr. Pitman stated, “They want a pair of horns but only have a pair of teeth.” They leave deep scars with their pairs of teeth, because they will savagely charge each other. Sometimes barnacles will settle on their teeth. The head of a Blainville’s beaked whale is flat to expose the teeth.
Cuvier’s Beaked Whale (Ziphius cavirostris)
Cuvier’s Beaked Whale
The Cuvier’s beaked whale was first identified by Frenchman Georges Cuvier from a skull in 1823. The skull had a large cavern in the head which was the reason for the name cavirostris (cavi means hollow or cavernous in Latin). Cuvier’s beaked whales also go by the name of goose beaked whale. The whale can grow to a length of seven meters. Cuvier’s beaked whales have the most variable coloration. Some Cuvier’s will be grey in color while others may be reddish brown in color. They have white sloping melons.
Gervais’ Beaked Whale (Mesoplodon europaeus)
Gervais’ Beaked Whale
The Gervais’ beaked whale was first identified by Frenchman Paul Gervais in 1855. The average size of a Gervais’ beaked whale is 4.8 meters. The prominent feature of the Gervais’ beaked whale is the vertical striping along its back along with a dark band just behind the melon. A white circular spot is located just below the melon. The dorsal fin is dark. The male Gervais’ beaked whale has one set of teeth located about one-third of the way back from the tip of the beak. Males turn dark and lose their striping with age. Males also rake each other; however, scars from the encounters re-pigment a darker color.
Sowerby’s Beaked Whale (Mesoplodon bidens)
Sowerby’s Beaked Whale
The Sowerby’s beaked whale was first identified by Englishman James Sowerby in 2804. The average size of a Sowerby’s beaked whale is 5.5 meters. They are one of the few whales that have a long beak. Males have one pair of teeth that are located about two-thirds of the way back from the tip of the beak (or rostrum). Males have make scratch marks along their backs; however, since the teeth are positioned so far back, scratch marks are from just one tooth and not a pair which would create parallel tracks. Scientists believe the scarring is due to male competition. The dorsal fin is located approximately two-thirds of the way along the back. These whales are not very aggressive and more than one male will be seen in a group. These animals do not usually travel alone unless it is a male.
True’s Beaked Whale (Mesoplodon mirus)
True’s Beaked Whale Photographed on Our Cruise
True’s Beaked Whales
The True’s beaked whale is the dominant subject of study of this cruise. The True’s beaked whale was first identified by American Frederick True in 1913. Due to his excitement over his discovery of the marine mammal, he named it mirus, which means wonderful in Latin. A True’s beaked whale can grow to be about 5.4 meters. The identifying features of a True’s beaked whale include: a dark band behind the melon, a large light spot behind the dark band, a pale melon, two tiny flippers, dorsal fin that is small and triangular, and for males two tiny teeth at the front of the rostrum. These whales will have paired parallel scarring because their teeth are so close together.
Personal Log
First and foremost, I am in awe every day at the different things I see in nature on this cruise. I have seen so many birds that I cannot remember one from the other… not to mention the dolphins. I did not know there were so many kinds of dolphins. I watched the television series “Flipper” when I was a little girl, and now I can say I have seen a bottlenose dolphin in person. I think the scientists get almost as excited as I do about seeing an animal even though they have probably seen them hundreds, if not thousands, of times. Nature is always amazing no matter how many times you see it.
During Dr. Pitman’s presentation, I was captivated by the way he spoke about the whales like they were his best friends he had known forever. I found out why. He has spent most of his life studying them. Dr. Pitman is an amazing resource for me on this cruise. Being a marine mammal observer newbie, Dr. Pitman took the time to answer all of my questions about whales. I really value the conversations I have had with a famous whale lover.
The weather has not been ideal for marine mammal observation for several days. If the swell is too high, it makes it hard to see the animals, because they can breach in the waves where we cannot see them. The fog also makes it difficult to see the animals, and it is not safe on the flying bridge if it is raining. During times of foul weather, the scientists are busily working on projects except for the seabirder. The seabirder sees several birds during foul weather. The chief scientist, Dr. Danielle Cholewiak, has assembled an international crew of scientists who are as passionate as she is about beaked whales.
During the foul weather when people are not working on other projects, the galley is place to be. The scientists have taught me how to play a card game called Peanut. It is a wild version of a multiplayer solitaire. I am usually pretty good at catching on how to play card games, so learning another game was fun. It gets fast and furious, and you cannot be faint of heart. The first person to 100 wins, but the person with the lowest score which can be negative also gets to be the winner of the lowest score. Sometimes even a NOAA Corps officer will join in on the excitement. All kinds of fun happens on board the Gordon Gunter!
One of the best experiences I have had so far on this cruise is talking with the crew. They are from all over the country and take their work very seriously. As different NOAA Corps officers on board get promoted, they may not stay with the Gordon Gunter and may move to other ships. Most of the crew, however, sticks with the Gordon Gunter. I thought when we went on the cruise that we were basically going on a “fishing” trip to watch whales and dolphins and no machinery would be on board. Oh how I was wrong! There are several pieces of heavy machinery on board including a crane and a wench. The boatswain is in charge of the anchors, rigging, and other maintenance including the heavy machinery. Boatswain is not a term I was familiar with before this cruise. The word is pronounced like “Bosun” not “Boat Swain.” Boatswain Taylor is the first one I see in the mornings and last one I see at night. He works tremendously hard to make sure the “work” of the ship is done.
Did You Know?
The Smithsonian National Museum of Natural History Marine Mammal Program created a beaked whale identification guide. Check out the website: http://vertebrates.si.edu/mammals/beaked_whales/pages/main_menu.htm
Barnacles (balanus glandula) – sticky crustaceans related to crabs and lobsters that permanently stick themselves to surfaces
Blowhole – similar to “nostrils” in humans which sits on top of the head to make it easier for cetaceans to breath without breaking their swimming motion.
Dorsal fin – a fin made of connective tissue that sits on the back of a whale believed to be used for balance, making turns in the water, and regulating body temperature
Fluke – a whale’s tail is comprised of two lobes made of tough connective tissue called flukes which help it move through the water
Melon – an oil-filled sac on the top of a beaked whale’s head that is connected it vocal chords. The melon helps the whale to make clicks which help it to find food.
Rostrum – snout or beak of a whale
Winch – a machine that has cable that winds around a drum to lift or drag things
Photograph References
“Beaked Whale Sets New Mammalian Diving Record.” The Guardian. 27 March 2014. https://www.theguardian.com/science/2014/mar/27/beaked-whale-new-mammalian-dive-record
“Blainville’s Beaked Whale (Mesoplodon denisrostris).” NOAA Fisheries: Species Directory. https://www.fisheries.noaa.gov/species/blainvilles-beaked-whale
“Gervais’ Beaked Whale (Mesoplodon europaeus).” NOAA Fisheries: Species Directory. https://www.fisheries.noaa.gov/species/gervais-beaked-whale
“Sowerby’s Beaked Whale (Mesoplodon bidens).” Ocean Treasures Memorial Library: The Legacy Continues. http://otlibrary.com/sowerbys-beaked-whale/
Photographs of True’s beaked whales taken by Salvatore Cerchio. Images collected under MMPA Research permit number 21371.
The visual sighting team started early this morning at 6:00 am and had rotating shifts of 30 minutes each until 7:00 pm. The different shifts included watching with regular binoculars on the port and starboard sides, watching with the big eyes on the port and starboard sides, and being the data recorder for sightings. I had the opportunity to shadow scientists in each of these positions throughout the first day and actually performed the duties on the second day.
Members of the Cetacean Survey Visual Team on Lookout
One of the important jobs the data recorder has is to input the environmental conditions at a certain point in time. The first measurement to input is the percent of cloud cover which is just a number from 0 to 100. Then the glare magnitude is determined on an ordinal scale from 0 to 4 with a value of zero meaning none and a value of four meaning severe. After determining the glare magnitude, the percent of glare cover is determined. Since the two sets of big eyes cover from 90 degrees left of the bow to 90 degrees right of the bow, the glare covering this spaced is what is determined. The data recorder also has to determine the degree angle and height of the ocean swell. Swell is not the wind waves generated by local weather. It is the wind waves that are generated by distant weather systems. Then the Beaufort scale is used to determine the amount of wind on the ocean. The scale was developed by Sir Francis Beaufort of the United Kingdom Royal Navy in 1805. The scale ranges from 0-12. A zero score means the surface is smooth and mirror like, while a score of 12 means there are hurricane force winds. Rain or fog is also determined by the data recorder. Finally, the data recorder has to determine a subjective condition of the weather overall. This is on an ordinal scale from 1 to 4 with 1 being poor and 4 being excellent.
When a marine animal is sighted by one of the observers, the data recorder has to input several measurements about the event. The bearing of the location of the animal has to be determined using the big eyes. Also, the big eyes have a scale in the lens called reticles that determines distance from the ship to the animal. A conversion scale can then be used to determine how far away the animal is in meters or nautical miles. The number of animals sighted, including any calves that are in the group, has to be given. The group’s swim direction has to be determined based on bearing from the ship. If possible, the species of the group has to be given. Since the objective of this survey is to find the occurrence of Mesoplodons in the North Atlantic Ocean, determining the species is very important. Also the observer has to give the initial cue as to what determined the identification of the species. Several different cues are available such as the body of the animal, the blow of a whale or dolphin, or the splash.
The software used to input the occurrence of a marine mammal automatically inputs the GPS of a sighting. The initial route for this survey is a zig zag pattern out of Rhode Island towards Georges Bank. There are several canyons with very deep waters (over 1,000 meters) which is where the Mesoplodons make foraging dives to get food. Instead of making a straight line through the canyons and only making one pass through the area, using zig zag routes gives the survey a better chance of locating Mesoplodons. The chief scientist uses the information from sightings to track a path for the ship to take the next day. Sometimes the acoustics team hears possible Mesoplodons. If the acoustics team can find a convergence of the area of an animal, they will tell the ship to go at a slower rate or turn.
The map here shows the sightings of Mesoplodons from the beginning of our journey and the zig zag pattern taken by the chief scientist. The first day of our journey, a storm was coming up the East Coast. The Gordon Gunter‘s Commanding Officer (CO) determined that we could run from the storm by going east in a straight line direction instead of doing the zig zag motion. The CO was correct, because we did not have bad weather. The ocean had a lot of high swells which made the boat rock tremendously at times but no rain.
A map of the daily route of the Gordon Gunter based on sightings.
Personal Log
I have found my favorite place to be on the visual sighting team…being the data recorder. Statistics is my passion, and being the data recorder puts me in the middle of the action getting mass amounts of data. It also helps that the data recorder sits in a high chair and can see a wide area of the ocean. The scientists have been very helpful in finding me a milk crate, because that chair is so high I cannot get onto it without the milk crate. Being the data recorder can be intense sometimes, because multiple sightings can be made at the same time. In any free time I have, I will fill in as the data recorder. It is lots of fun!
Favorite place to be on the visual team – Data Recorder
One thing that was a little intimidating to me at first was the intercom system. I would hear things like, “Fly Bridge Bridge.” Then the data recorder would say “Bridge Fly Bridge.” I had no clue of what they were talking about. Then all of a sudden it made sense to me. In “Fly Bridge Bridge,” someone from the Bridge is calling up to us on the Fly Bridge. The Bridge has a question or wants to tell the people on the Fly Bridge something. Since I figured it out, I am ready to go.
I have learned so much on this cruise in the short time I have been aboard the Gordon Gunter. My head is exploding with the numbers of lessons that I can incorporate into my statistics classes. I have also talked with the acousticians, Jenny, Joy, Emily, and Anna Maria, and have come up with lessons that I can use with my algebra and calculus classes as well. The scientists have been very generous in sharing their knowledge with a science newbie. Being a math teacher, I want to be able to expose my students to all kinds of content that do not deal with just the boring math class. Being a Teacher at Sea has opened up a whole new experience for me and my students.
We have an interesting participant in our cruise that I was not expecting but was happy to meet…a seabird observer. Before this cruise I did not know there were birds that pretty much lived on the surface of the ocean. These birds have been flying around the ship which is about 100 nautical miles from shore. The seabird observer documents all sightings of seabirds and takes pictures to include in his documentation.
Did You Know?
Reticles are the way a pair of binoculars helps observers to determine the distance to an animal; however, the conversion from reticles to distance is not an instantaneous solution. Based on the height of a pair of binoculars on the ship, reticles can mean different distances. A conversion chart must be used to determine actual distance.
Check out this article on how to estimate distance to an object with reticles in a pair of binoculars:
acoustician – someone whose work deals with the properties of sound
bearing – the direction from your location to an object in the distance starting at 0° which is located at absolute north. For example, if an animal is spotted at 90°, then it is due east of your location.
blow of a whale – the exhalation of the breath of a whale that usually looks like a spray of water and is an identifying feature of different species of whales
bow of a ship – the point of the ship that is most forward as the ship is sailing (also known as the front of the ship)
cloud cover – the portion of the sky that is covered with clouds
foraging dive – a type of deep dive where a whale searches for food on the ocean floor
glare – the light reflected from the sun off of the ocean
nautical mile – a measurement for determining distance on the ocean which is approximately 2025 yards (or 1.15 miles) or 1852 meters
port side of a ship – when looking forward toward the bow of the ship, the left side of the ship is port
starboard side of a ship – when looking forward toward the bow of the ship, the right side is starboard
![Six subfigures showing three dimensionsal plots. the Y axis shows depth, from zero to -3000 m below sea surface. the x and z axes are West-East km and North-South km. caption reads: "Fig 2. Cumulative ambiguity volumes [(a)-(f)] for detections of simulated echolocation clicks from a stationary whale located 1.2 km directly below the transect line (denoted by a white asterisk.) The product of all volumes results in a volume representing all possible location estimates for the whale (f). The color scale represents the ambiguity volume values ranging from 0 (white) as low probability to 1 (black) as high probability. The dotted lines (white or black) indicate the trackline traveling in the direction of the arrow."](https://i0.wp.com/noaateacheratsea.blog/wp-content/uploads/2023/08/230825-ambiguity-volumes.png?ssl=1)
