gumby suit – NOAA Teacher at Sea Blog

July 18, 2025July 24, 2025

Sinh Nguyen: Scientists who SEA, July 14, 2025

NOAA Teacher at Sea

Sinh Nguyen

Aboard NOAA Ship Pisces

July 7, 2025 – July 24, 2025

Mission: Larval Bluefin Tuna Slope Survey

Geographic Area of Cruise: North Atlantic Ocean, Slope Sea

Date: July 14, 2025

Weather Data:

1:32 PM Eastern Time

Norfolk, Virginia

The temperature is 32°C (89°F)

Career Spotlight

Uplift Education, Mighty K-12 scholars: Did you know some people have jobs where they explore the ocean, study sea animals, and help take care of our planet?

Some of you, even those already thinking ahead in middle or high school, might be wondering what kinds of jobs or studies you can pursue one day. Well, today we’re going to meet some real-life ocean heroes: the scientists on the science crew who are sailing aboard NOAA Ship Pisces for the larval bluefin tuna mission. They come from all over the United States and are experts at what they do.

Why are they awesome? If you’d like: go ahead and think, share, and then draw or write your responses on this digital whiteboard:

https://www.whiteboard.chat/board/963e0100-9dc6-4679-85ff-2116fdc539d1-pgNum-1

Based on some of your responses… these scientists are curious like inquirers, hardworking and knowledgeable, and they show they are caring by helping protect sea life. They are communicators who share what they know, and courageous learners who explore the unknown! Now, let’s learn more about our science crew to find out how you might be a sea explorer one day!

* Note: I’ll be updating this post throughout the cruise. These interviews were rephrased to fit into the blog. For full interview responses, please click here: https://docs.google.com/document/d/1bvKvswISdjFMMqG7QNoc8FDox74Ysey-Xp2ERMLvajc/edit?usp=sharing

a view from an upper deck of NOAA Ship Pisces over the bow. Four women stand at the rail, leaning on their elbows, looking ahead as the ship exits the port of Norfolk. We can see tall buildings and other large ships off to each side. The words Meet the Scientists! are imposed in the middle of the image.

Meet the Scientists!

Hi, I’m David Richardson! I live in South Kingstown, Rhode Island, but grew up in Sierra Madre, California. I studied Natural Resources at Cornell University, then went to grad school at the University of Miami. I’m the chief scientist on this cruise, which means I help plan how we collect data to meet our science goals. My research focuses on larval fish, fish migrations, and how ocean conditions affect fisheries. My favorite marine animal’s the sail fish. They’re beautiful at every stage of life! I love science because it helps us make the world better. In fisheries science, our work helps keep fish populations healthy so people can continue to enjoy fishing and have access to food.

Fun fact: My first research was on baby eels near Barbados. I discovered and illustrated six types of eel larvae that were new to science! That experience showed me how much of the ocean is still a mystery. My advice: Pay attention in math and writing but also get outside! Observing nature is one of the best ways to become a great scientist.

photo of a woman in a float coat, black overalls, a beanie, aand workboots standing on an upper deck of the ship; we can see part of the bow, calm seas, and a cloudy sunset in the distance

My name’s Allison Black! I’m from eastern Connecticut and often at sea. I studied Zoo and Wildlife Biology at Malone University and worked briefly as a zookeeper before focusing on ornithology. My favorite (yet unseen) marine animal is the Wandering Albatross. They can travel over 75,000 miles a year! On this project, I’m surveying seabirds and marine mammals. I love the ocean’s mystery and the chance to keep learning through different cruises. Fun fact: by year’s end, I’ll have 500 sea days! My advice: stay flexible, stay curious, and seize opportunities you didn’t know existed.

I’m Chrissy Hernández! I grew up in New Jersey and now live in Oxford, England. I earned my bachelor’s from Columbia University and my PhD from the MIT-WHOI Joint Program in Oceanography. I’ve worked as a researcher at Cornell and Oxford. I’m a population ecologist who studies biological oceanography and theoretical ecology. My favorite marine animal is the bluefin tuna! Aboard the ship, I help deploy plankton nets, identify tuna larvae, and guide sampling efforts. I love the ocean’s vastness and mystery, and how tiny organisms like phytoplankton produce half the world’s oxygen. Fun fact: I once shaved my head and tossed the hair overboard during an equator-crossing tradition!

Hi, I’m Autumn Moya! I’m from Colorado and now live in Silver Spring, Maryland. I studied Biology at Western Colorado University with a focus on environmental biology, and I’m finishing my Master’s in Coastal Science at the University of Southern Mississippi. My research models how offshore development might affect the Atlantic surf clam fishery. I’m currently a John A. Knauss Marine Policy Fellow with NOAA’s Office of Marine and Aviation Operations. I support communications, policy, and events. I’m excited to join research cruises like this one. My favorite marine animal is the cuttlefish. Did you know they can change color as fast as a blink? I’ve always loved the ocean, even growing up in a landlocked state. Since finishing my bachelor’s, I’ve lived in seven states! My advice to future scientists: stay curious and never hesitate to reach out. Science is for everyone!

Hi, I’m Amanda Jacobsen! I’m from Rhode Island. I studied Environmental Studies at Connecticut College and now I’m working on my master’s in Marine Biology at UMass Dartmouth. On this cruise, I help deploy nets and collect seawater to study the carbon in it. My favorite sea creature is the lumpfish. Look it up, it’s cool! I’ve worked on over 80 boats, and I love biology because it lets me explore the hidden world of ocean life.

Sometimes only visible under a microscope.

My advice to you: Stay curious and try new things, you might discover something amazing or meet someone who inspires you!

a woman kneels on the aft deck on one knee, both hands on a piece of scientific equipment (maybe a water profiler) resting on deck. she pauses what she is doing to turn and smile for the camera.

Hi! My name is Kristen Walter and I live in Miami, Florida. I graduated from the College of William and Mary with a master’s in marine science. I now work for the University of Miami/CIMAS studying coral reef fishes and bluefin tuna! My favorite marine animal is probably the nudibranch! I’m here on this cruise to help locate larval bluefin tuna, set and recover nets, preserve and identify fish, and test out new methods of capture using light traps. A fun fact about me is that I got to participate in the Aquarius Reef Base Underwater Habitat in Key Largo when I was in grad school. If you’d like to get into marine science, look for summer internships. Many places offer programs for high school students. Get your feet wet. Anything is possible!

Personal Log

Over the weekend, we moved back onto NOAA Ship Pisces. It felt nice to return after a few nights in a hotel while crew members got everything ready for our big mission.

view of computer screens, keyboards, mice on a wooden desk in an interior room of the ship — When we’re not setting things up, we spend time working in a place called the dry lab. The dry lab has computers, machines, and tables for us to study the ocean data we collect during the mission. I’ve been using this time to write my blog!

broader view of the dry lab: metal tables, a wooden desk, computers, computer chairs, two unidentifiable people sitting, facing away from the camera — Many scientists also bring their laptops, journals, or books to read or work on. It’s a quiet place where people come and go, but when it’s time to work, everyone jumps in to help!

three women - one seated at a desk, two standing - are in discussion. the seated woman holds up a piece of plastic film with her left hand. — Scientists Kristen, Chrissy, and Sarah are making sure the light traps for our drifters (for catching fish) are ready.

Just like we practice fire drills and safety rules at school, there are also important rules and practice drills in case of emergencies.

two people walk through a hallway of the ship toward an exit to an outer deck — Staying safe is super important when you’re out at sea.

a NOAA Corps Officer (in blue uniform) stands at the front of the mess hall and holds a breathing apparatus up; it blocks the view of his face. we can see the chair legs are capped in cut tennis balls to prevent them from sliding — Lieutenant Musick, one of the operations officers, is giving us safety training. He’s showing us how to use an EEBD (emergency escape breathing device).

a group of people stand outside on the aft deck, surrounding a NOAA Corps Officer in a blue uniform using his hands to illustrate a point — We were given a tour of places to know for emergencies. All crews were involved including members from science, NOAA Corps, engineer, and deck teams pictured here

a piece of paper attached to a door with a magnet. the paper reads: TAS Nguyen, Sinh, and then lists three sets of muster locations for Fire & Emergency, Abandon Ship, and Mariner Overboard. The three scenarios also include depictions of the corresponding morse code, shown as boxes or rectangles — Outside of each stateroom, or everyone’s rooms, there is information on where you report to and what your role is during emergencies. It’s a good idea to study this information!

Sinh (right) and a woman (left) pose for a selfie with a dummy used in safety exercises — With our floaty rescue dummy!

Safety first! I need to make sure I can stay afloat in case I ever have to evacuate into the water.

I tried on an immersion suit, or “Gumby suit,” to make sure I can float in water. It’s also designed to keep people warm in the water in case they have to abandon ship or go into the water.

Sinh, wearing his Teacher at Sea baseball cap, poses for a photo - making a shasta sign with his left hand and with his right, grasping the bagged survival suit and personal flotation device. he is standing on an outer deck. — So far, I’ve really enjoyed getting to know everyone on board. I’m a lot more familiar with everything around the ship, including where all the rooms, crew members, and emergency equipment are. I’m feeling excited about our mission once we set sail.

Next time, I’ll be writing about a special tool we use called the CTD (Conductivity, Temperature, and Depth), which helps us learn more about the ocean!

Did you know?

NOAA ships have their own weather stations right on board. That means they can measure wind, rain, temperature, and more. Even while they’re sailing across the ocean! What do you think scientists do with that information?

close up of a digital display mounted to a ceiling. currently it displays latitude and longitude — The station also shows navigational information, which gives everyone exact locations (coordinates) of the ship.

July 7, 2025July 7, 2025

Jojo Chang: The People in the NOAA Shimada Neighborhood, July 3, 2025

a woman smiles for the camera as she works to pull the hood of the survival suit over her head. she's standing on deck and there are other suits lying around and other crewmembers getting dressed.

NOAA Teacher at Sea

Jojo Chang

Aboard NOAA Ship Bell M. Shimada

June 30 – July 15, 2025

Mission: Integrated West Coast Pelagics Survey (Leg 2)

Geographic Area of Cruise: Pacific Ocean, California Coast

Date: July 3, 2025

Weather Data from the Bridge

7 a.m. Pacific Daylight Time

Currently, the air temperature is 14.3°C (57.7°F). The wind speed is 8.2 knots.

Science and Technology Log

These are some of the people in my new neighborhood! There are many different jobs and career titles on board NOAA Ship Bell M. Shimada. It is an interesting learning experience investigating the human work that goes on at sea. The ship occupations are broken down into the following categories: science, engineering, ship management, NOAA Corps, survey technology, electronics, and stewarding. Today, I will be writing about the scientists.

Science

On the science side, many different scientists are doing fascinating work on board. Here I will review just a few. Many of the scientists have PhDs and work in the exact field they researched in their graduate studies. Sabrina, Zach, and Melissa are fish biologists. They work directly in the lab, counting, dissecting, and investigating the health, population, and biology of the fish.

portrait photo of a woman wearing a purple beanie and an orange jacket, hands in pockets and smiling for the camera. she is standing in the wet lab next to a long metal table. — Sabrina, Fish Biologist

Most of their work on this voyage is focused on two different types of fish populations: hake, and coastal pelagic species (CPS) (which include Pacific sardine, Pacific mackerel, Jack Mackerel, Northern Anchovy, Market Squid, and Krill.)

In addition to the biologists, we have a research economist, a software engineer, and a satellite oceanographer on board. These three scientists have volunteered to be on the ship for both the adventure and to get a better understanding of how their work combines with other NOAA research.

a young woman with long hair wearing a white sweatshirt poses for a photo near a poster of a ship. The poster's title, in recognizable font, jokes: "The Lore of the Shimada, Fellowship of the Integrated." — Phoebe, Research Economist

a woman wearing a black shirt and two unzipped outer layaors smiles for a portrait photo. she stands on the aft deck in front of the A-frame. — Phoebe, Research Economist

For example, Melina helped expand, adapt, and add functionality to a computer program called CLAMS: Catch Logger for Acoustic Midwater Surveys. The scientists work with this program in the wet lab to capture and record important data about the fish populations they are studying.

photo of a computer screen showing the homepage of the CLAMS V3.0 program. It reads CLAMS V3.0, Catch Logger for Acoustic Midwater Surveys, Ship: Bell M. Shimada, Survey: 202506, options to "Log Event," "Enter Catch," "Utilities," "Administration," "Exit." In the background there is an image of a large school of fish, as well as two cartoon sardines running on legs (wearing shoes.) — Homescreen for the CLAMS computer program

Personal Log

On the first day at sea, we practiced safety drills for fire/emergency and for the unusual occurrence of having to abandon ship. Being able to put on a survival suit is critical to an individual’s safety in the event of having to enter the water because it will protect them from hypothermia. In these photos, our crew is on deck and practicing drills to get into the survival suit. It is a bit like trying to put a chicken into a prom dress, but I managed to get it on with a little help and instructions from my crewmates.

A woman wearing a Teacher at Sea beanie and t shirt stands on deck, partially dressed in a thick orange neoprene survival suit. she smiles down as she uses her right arm to pull her left down into the arm of the suit. in the background we see piles of survival suits and other crewmembers working to don them. — Jojo works on getting her left arm into the survival suit

a woman, barely visible, stands in a survival suit with her gloved hands raised for a photo — Ta da!

Did You Know?

On board the NOAA ship Bell M. Shimada, there is a specialized acoustics lab that plays a vital role in scientific research. Currently, this lab is actively collecting meteorological, geophysical, and biological data from along the bottom of the Pacific Ocean. Meteorological data includes information about weather conditions, such as wind patterns, temperature, and atmospheric pressure. Geophysical data refers to the physical characteristics of the seafloor, including its composition, structure, and topography. Meanwhile, biological data focuses on the living organisms found in this underwater environment—particularly the fish species being studied. Together, this data provides crucial information concerning the ocean’s dynamic systems that propel scientific work.

Biological data is especially essential for the scientists aboard the NOAA ship Bell M. Shimada. To collect this information, the ship uses sound waves that are sent down into the water to detect fish. When these sound waves encounter schools of fish, they bounce back and generate an image on a monitor. Chief Scientist Rebecca Thomas explains that this process is similar to the echolocation used by dolphins to navigate and locate food in the ocean.

Expanding on this, research fish scientist Steve De Blois describes how the resulting acoustic map helps identify different species. For example, hake appear as a green, wavy snake deep in the epipelagic, or sunlight zone; rockfish resemble haystacks near the seafloor; and coastal pelagic species (CPS) show up as a red ball closer to the surface.

Since the Shimada is focused on fish research, the scientists rely heavily on this acoustic technology to locate and study their target species with precision.

Animals Seen Today:

Pacific white-sided dolphins and humpback whales.

September 13, 2024November 9, 2024

Lisa Werner: How Does Communication with Popoki Work? September 11, 2024

NOAA Teacher at Sea

Lisa Werner

Aboard NOAA Ship Bell M. Shimada

August 29-September 13, 2024

Mission: EXPRESS Project

Geographic Area of Cruise: Pacific Coast, near Northern California

Date: September 11, 2024

Weather Data from the Bridge (Coquille Bank):

Latitude: 42º58.378’ N

Longitude: 124º50.146’W

Wind Speed: 23.78 knots

Air Temperature: 14.3ºC/57.74ºF

Conditions: Rain

Science Log

Let’s talk about how Popoki, the autonomous underwater vehicle (or AUV), ‘converses’ with the AUV pilot aboard the ship. The map and directions for the route Popoki will be mapping is programmed into her computers ahead of each dive. On this mission, Popoki has been deployed daily, so every evening, the scientists carefully plan out where she will go on each deployment. They also plan the path Popoki will go when on location – this cruise she has made a lot of sawtooth-shaped patterns to give the scientists the greatest survey of what is in the areas they want to study.

photo of a computer screen showing, at center, an image from a computer-generated model of the underwater bathymetry of an area. Overlaid on the image are topographic lines and depth numbers. overlaid on that is a zig-zagging white line showing Popoki's route. — *Of course, tomorrow’s dive pattern is not a sawtooth pattern. The pattern is drawn out in the white lines over the diagram of the ocean floor contour.*

Though this seems like it would be easy to set up Popoki and let her run her course, that is not quite the end of the story. During a dive, the ocean current is sometimes unknown in any given area, so the AUV pilot needs to be able to help Popoki adjust her positioning. It would not be a very big help to get pictures of an entirely different area than the scientists were aiming for because the ocean currents took Popoki to a different area of the sea floor. The scientists also need to be able to help Popoki if she gets stuck on fishing line, or if the conditions above the water change – such as weather changes or vessel traffic – that would require Popoki to surface ahead of her scheduled time.

To communicate with Popoki, an acoustic modem system is used. There is a modem aboard the ship that can send messages to Popoki through a series of chirping sounds. The pitches and lengths of the chirps are all part of the code that Popoki can understand. She has a device that ‘listens’ for these sounds and can then follow the coded instructions to alter her pre-programmed course. She also communicates regularly with the AUV pilot – sending the coordinates she believes she’s at, her depth, battery life, and how many pictures she has taken so far in the dive.

close-up view of a piece of electronic equipment inside a water-proof housing (with the lid removed to show the contents). There are knobs, dials, CAT-5 cables. — *The modem that communicates with Popoki*

Popoki’s communication device points upward, so when deployment is taking place, the scientists place a transducer into the water to use to communicate. Once Popoki is on her way to her programmed starting point, and farther away from the ship, the transducer is removed from the water.

crewmembers, wearing hard hats and life vests, lean over the rail of the ship and use hooked poles to guide a small yellow object suspended from what looks like a fishing pole safely down toward the water's surface. — *This is the transducer that is placed in the water for deployment*

Sometimes there are difficulties with this communication, and this is where the ship’ crew plays a very important role. The officers on the bridge work to position the ship in areas that allow for Popoki and the acoustic modem to speak to each other easily. The angle of the ship will change as Popoki goes through her programmed patterns, adjusting so that the chirps of the modem have a direct line to Popoki. Distance also plays an important part of the communication process – if the ship and Popoki are too far away from each other, there can be interference with the communication. Ocean current, wave heights and lengths, and other sounds coming from the ship can interfere with the communication, as well. The AUV pilot and the ship’s crew work very closely together throughout the entirety of the dive to help the Popoki and the pilot have clear communication.

photo over someone's shoulder of a computer screen displaying a gridded graph. on the graph is a simplified outline of the ship (like a rectangle with a triangle attached to one end) and some dots to the ship's port side — *AUV pilot Jeff Anderson’s screen showing the ship’s position and Popoki’s position (Denoted as dots)*

At this point, you may be wondering WHY do we use Popoki. I’m sure that you can see her benefits in exploring areas we have not yet seen, but the why actually goes much deeper than that (no pun intended). One of the first things Popoki is doing is looking at areas that are being considered for future offshore wind farm sites. There is a great interest in putting wind turbines over the ocean to create renewable energy for our country. Having been on the Pacific Ocean for 2 weeks now, I can definitely attest to the fact that the wind is very strong in these areas, so there is plenty of energy to harvest. Popoki is identifying the deep sea habitats and geological features on the seafloor that would need to be considered when anchoring any wind turbines.

Popoki is also looking at the changes to the habitats as a result of different regulations that have taken place in fishing areas in this region. Some of the locations we have visited were mapped out by Popoki in the past, and scientists are looking to see whether fishing regulations have helped the populations of ocean life return. Finally, Popoki has been looking for evidence of seeps in the ocean floor. These geological areas are spots where cracks in the ocean floor have occurred due to plate tectonics.

underwater image of the seafloor. it's mostly muddy, with only a little relief, but through the center is a dark crack in the floor, with what appears to be steam (maybe hotter water) rising out of it. we can also make out what might be corals, and a fish. — *Picture of an ocean seep (Photo credit: Popoki)*

Personal Log

The ship’s crew spends a lot of time preparing for safety. Just like we have fire, tornado, and lockdown drills in our school, the ship has drills to practice for emergencies as well. They need to be ready for any emergency, and everyone has a role to play. We have practiced the drills each week.

Throughout my time on NOAA Ship Bell M. Shimada, I have gotten to experience some pretty amazing things. However, my absolute favorite moment was getting “Helm time.” That’s right – I got to drive the ship! With Ops Officer Lieutenant Jaime Hendrix and Ensign Megan Sixt guiding me, I got to turn the ship to hard rudder, causing her to drive in a circle. I also got to get her back to her appropriate heading for the transit we were making, and then practice keeping her on course. It was really interesting to see how the ship reacts to the controls and to see what she does! I am so grateful to CO Laura Gibson for this opportunity, and really appreciate the help LT Hendrix and ENS Sixt gave me!

photo of Lisa wearing a bright red survival suit - all we can see of her is her eyes (with glasses) and a portion of her Teacher at Sea beanie hat. she stands on deck on a clear day and stretches her arms out for the photo — *Me wearing the Immersion (or “Gumby”) suit (Photo credit: Curt Whitmire)*

We practice where to gather, or ‘muster,’ in the event of a fire or abandoning ship. At the very beginning of the cruise, we get right to work with a tour of where to find the lifeboats, how to deploy them, and then we get to the drills.

Recently, I had the opportunity to learn to use the flares and the line thrower. The line thrower is used for ship to ship transfers or for rescuing someone who’s fallen overboard. Although it is really fun to get the experience to use these devices, it is definitely something that you hope only gets used in training. However, knowing they are there and that everyone knows how to use them makes you feel a bit better if an emergency does happen.

Lisa, wearing very large, thick gloves, poses near the ship's railing and smiles at the camera. in her left hand, over the railing, she holds a lit flare. it's a mostly clear day, and the sky is blue with a few clouds, and the ocean has a few whitecaps. — *I now know how to use the flares! (Photo credit: Alice Kojima-Clarke*)

Trying out the line thrower

We are not on autopilot!!! ENS Sixt and LT Hendrix helping me learn to drive a ship! (Photo credit: Randy Scott)

Music Connections

Communicating with Popoki has a lot to do with acoustics. Listening to her pilot talk about how important the angles between Popoki and the ship are reminded me a lot of preparing for a recital when I was a music education student at UW-Whitewater. As an undergraduate, we had several performance requirements per semester. For solo performances, the more experienced music majors would always pass on a very important piece of acoustic information to the new undergrads – always aim the trombone bell at the 3rd exit sign along the stage right wall. Hitting this sweet spot would cause the recital hall to ring, the trombone sound to be dark and full, and the experience to be the best for all who were listening. New trombone majors learned very quickly that this was not a piece of urban legend, but by bouncing the brass sound off of the wall at this angle, it was much more pleasant for the audience than to play directly at their faces.

view of an empty performance hall — *The beautiful Light Recital Hall at the University of Wisconsin-Whitewater – a great place to perform and explore acoustics! (Photo credit: Dr. Glenn Hayes*)

Communicating with Popoki is similar in a way – rather than bouncing her communications off of corners and walls, however, she responds better to the sound waves coming directly at her. She has a sweet spot, too, but it is more about decreasing the angles. This is a much more efficient method of communication for her, because she does not care about the timbre of her chirps!

Another great moment I really enjoyed during our time together was helping our Chief Scientist Dr. Clarke learn ukulele! I always believe that music is everywhere, and Dr. Clarke proved that theory again for me by bringing her ukulele along on this cruise when she heard the Teacher at Sea was a music teacher! Hopefully she had as much fun as I did!

In the computer lab, Lisa and Dr. Clarke sit in chairs facing one another. Lisa, smiling, leans forward to hold up an open laptop where Dr. Clarke can see it easily. Dr. Clarke watches the screen as she picks at her ukulele. — *Dr. Elizabeth Clarke showing off her virtuoso skills with a little “Hot Cross Buns” (Photo credit: Alice Kojima-Clarke*)

Sounds from the ship today will feature the sound of the ship’s engine outside from the very top deck of the ship.

This is the sound of the engine humming from the Fly Deck. You can also hear the waves, as we are in transit to our next station!

Student Questions

St. Bruno students are fascinated by sea creatures, and they have sent me on a quest to learn about the octopus. I think they will be very excited to see this picture and learn about the deep sea octopus!

underwater image of the seafood showing many brittle stars and some corals. in the lower right, there is a sponge, which since it is viewed from above appears as a white ring. inside the sponge, an octopus is curled up - we can see one eye and several tentacles — *Look at the octopus curled up in a sponge in the bottom right corner. You can see the octopus’s eye sticking out! (Photo credit: Popoki*)

Final Notes

The NOAA Teacher at Sea Program is an incredible opportunity for any teacher. As you can see, you do not need to be a science teacher in order to apply. There are so many connections to be made with the ocean, and students get really excited about learning through their teacher’s experience. Applications for the program will open soon. You can find more information here. Thank you so much to the crew of NOAA Ship Bell M. Shimada, the EXPRESS Scientists, and the NOAA Teacher at Sea program for this opportunity. What an incredible experience!

August 14, 2023September 13, 2023

Gail Tang: And We’re Off! Aug 8, 2023

NOAA Teacher at Sea

Gail Tang

Aboard NOAA Ship Oscar Elton Sette

August 4, 2023 – September 1, 2023

Mission: Hawaiian Islands Cetacean and Ecosystem Assessment Survey (HICEAS)

Geographic Area of Cruise: Hawaiian archipelago

Date: Tuesday August 8, 2023

Weather Data from the Bridge

Temperature: 26.97°C

Latitude: 27.428517 N

Longitude: -167.325400 W

Science and Technology Log

Scientific results reach the general public as a nice package of carefully curated nuggets designed to attract the average reader. It’s not unlike watching a production (movie, play, etc) in its final form. The audience is glamoured by the show or results; we aren’t usually privy to the behind-the-scenes efforts in putting together these massive operations. With this view, there is an illusion of perfection that can hide the true nature of knowledge production. This is often the case in a traditional mathematics classroom that utilizes lecture-based teaching; the instructor works out a problem beforehand and presents the solution to the students. The students do not witness the creative process of trial and error, idea generation, incubation, evaluation of each step, decision-making, or any possible collaboration involved. In brief, the beauty of doing science or math is largely hidden for the general public. I believe that the opportunity for growth lies in the process of discovery just as much as the discovery itself. My access to the data collection process of this project is one of the main reasons I am so thoroughly enjoying myself on this HICEAS (Hawaiian Islands Cetacean Ecosystem Assessment Survey) mission.

Today is our fifth day at sea. Every moment is invigorating. During our first two days underway, we searched for the elusive Cross Seamount beaked whales (BWC). These whales have been identified acoustically, but not visually or genetically. The acoustics team heard them throughout the night on our first night, and the visual team had a sighting of a suspicious unidentified beaked whale during the third day but we didn’t get close enough for any species or individual identification. There was a lot of excitement on the ship. To learn more about beaked whales check out my roommate and lead acoustician, Jennifer McCullough’s, newest paper: https://onlinelibrary.wiley.com/doi/full/10.1111/mms.13061

Though I missed it, there was an important bird sighting of the Hawaiian bird, the nēnē. This is a notable sighting because it was formerly endangered (now listed as threatened). After conservation efforts, the population increased from 30 in 1950 to 3,862 in 2022. To read more about the nēnē, visit: https://www.fws.gov/story/2022-12/plight-nene

The most exciting sightings for me were the rough-toothed dolphins and the bottlenose dolphins. They came by to ride the ship’s bow waves. It was utterly magical. In a conversation with Marine Mammal Observers Andrea Bendlin and Suzanne Yin, I learned a little bit about these two species that I’ll share here.

You might recognize the bottlenose dolphin from Flipper, a popular TV show from the 60s or the movie version in the 90s. You may have also seen these dolphins at the aquarium as they can survive in captivity better than other dolphin species. They are described as the golden retrievers of the ocean. In the wild, they are regularly observed hanging out with other species.

An interesting observation of an interaction between a mother humpback whale and a bottlenose dolphin was captured by scientists and written up in a paper. They hypothesize three reasons for this interaction 1) aggressive whale response towards the dolphin 2) epimeletic (altruistic behavior towards a sick or injured individual) whale response towards the dolphin 3) they were playing!

To read the paper check out: https://www.researchgate.net/publication/228684912_Two_Unusual_Interactions_Between_a_Bottlenose_Dolphin_Tursiops_truncatus_and_a_Humpback_Whale_Megaptera_novaeangliae_in_Hawaiian_Waters

Three bottlenose dolphins swim through bright blue water. Two have breached the water's surface, giving us a clear view of their dorsal sides. A third is visible swimming underwater, underneath the two breaching. — Bottlenose dolphins came to say hi! (Permit #25754) Photo Credit: NOAA Fisheries Gail Tang

Rough-toothed dolphins are named for their rough teeth. They have a more reptilian sloped head. These animals communicate via whistles and clicks. Echolocation clicks are primarily used for sensing surroundings and searching for prey vs. communication. According to roomie and Lead Acoustician Jennifer McCullough, usually whistles look like a smooth increasing and then decreasing function, however, their whistles look like “steps” and are named stair step whistles (see the pictures below).

A graph of frequencies (measured in kilohertz) over time (measured in seconds). It is titled: Figure 1. Spectrogram of whistles produced by Steno bredanensis (44.1 kHz sample rate, 1,024 FFT, Hann window.) The background of the graph is gray with white speckles - looks like 'fuzz' - but distinct black lines trace the stair-shaped patterns of rough toothed dolphins' whistle frequencies. — Figure from Rankin et al. (2015, p.5)

Rough-toothed dolphins can take a while to identify because their echolocation signals (clicks) are outside the general frequencies for dolphins (e.g. bottlenose, striped, spinner, spotted) and “blackfish” (e.g. killer whale, false killer whales, pygmy whales, melon-headed whales). Blackfish signals go from 15-25kHz, dolphins go from 30-50kHz, while rough-toothed dolphins bridge these two ranges at 20-35kHz. For reference, the frequency range of adult humans is 0.500 kHz and 2 kHz.

Rough-toothed dolphins playfully riding the ship’s bow waves. Permit #25754.

Reference:

Rankin, S., Oswald, J., Simonis, A., & Barlow, J. (2015) Vocalizations of the rough-toothed dolphin, Steno bredanensis, in the Pacific Ocean. Marine Mammal Science. 31 (4), p. 1538-1648. https://doi.org/10.1111/mms.12226

Career Highlights

As I mentioned earlier, the information I’m receiving about the animals are from the scientists on board. In this particular post, Marine Mammal Observers Andrea Bendlin and Suzanne Yin (who goes by Yin), and Lead Acoustician Jennifer McCullough gave me insight to the dolphins. I’d like to share some of their background to give students an idea of their career trajectories.

Andrea Bendlin double majored in zoology and psychology at University of Wisconsin, Madison, with a focus on animal behavior. For the first 4 years after college, she worked on several different field projects including, 4 winters of humpback whale research, one summer study on bottlenose dolphins, and several summers in Quebec studying large whales. Then she started working on boats doing snorkel trips and whale watches. I can attest to Andrea’s snorkeling expertise as I had my favorite snorkeling experience in Hawaii when I was following her around. She pointed out my favorite snorkeling sighting which was an egg sack of a Spanish dancer nudibranch! As you can see in the picture below, it looks like a ribbon wound around itself. For math folks, it is a hyperbolic surface! Since then, Andrea has collected data for many cruises with cetacean research programs.

this egg sack, perched on a rock underwater, consists of elegant reddish-pink folds - from a distance it looks like a flower, like a carnation — Spanish Dancer Egg Sack. Photo Credit: Alamy Stock Photo

Yin studied biology at Brown University. After school, she worked at Earth Watch, and also did field work on humpback whales, spinner dolphins, and bowhead whales. These projects were conducted on what they call “small boats” (less than 50 ft long) as opposed to a ship like the one we’re currently on, which is is 224 ft long. On these small boats, Yin drove, took photos for species and individual identification, collected acoustic data, and used theodolites to measure angles. Later, she attended graduate school at Texas A & M University for her Masters degree. She studied wildlife and fisheries science with a focus on acoustics of dusky dolphins and tourist impact on them.

Gail, in front, takes a selfie with Andrea (to her right) and Yin (to her left) inside a stateroom. We can see bunk beds, luggage, a fan, metal lockers. — Andrea Bendlin, Gail Tang, Suzanne Yin in my Leg 1 stateroom

Jennifer McCullough is the Lead Acoustician on HICEAS 2023. She first started at Hubbs Sea World Research on killer whales where she learned acoustics. She participated in a joint polar bear project with the San Diego Zoo. She then completed a Master’s thesis on the giant panda breeding vocalizations through the San Diego Zoo and China Wolong Panda Reserve. She spent 6 months over 2 years in the Sichuan region. We talked about the Sichuan peppercorn for a bit since I love them so much. She prefers them whole, while I prefer them ground up. After that she worked at Southwest Fisheries Science Center in La Jolla, California and later moved to the Pacific Islands Fisheries Science Center in Honolulu, Hawaii and was the Acoustics Lead during HICEAS 2017. With the exception of a HICEAS project year, she is at sea for 30-60 days a year and the rest of the time she is ashore analyzing data from previous missions and constructing equipment for future ones! She loves the balance between the equipment work (technical side), field work (data collection), and lab work (data analysis). As a side note: she makes amazing quilts!

Jennifer holds up a quilt with both hands to show off the design: an abstract, feathery shape made from a fabric of many blue shades, sown onto a white background. — Jennifer McCullough with the quilt she just finished!

Personal Log

Life at sea reminds me a bit of my college dorming-days; you’re sharing a room and you leave your door open to invite others in! I share my room with really great roommates. Dawn Breese is a seabird observer and creates a nice vibe in the room with flowers she picked ashore and some sweet feathers taped to the wall. Alexa Gonzalez is an acoustician with whom I do crosswords and play “road-trip”-type games. Jennifer McCullough, highlighted above, is going to teach me how to watercolor!

All in all, I am fairly comfortable on the ship. I spend time bouncing between the acoustics lab, the flying bridge (where the visual team observes), the local coffeeshop—The Forward Mess—(where I do most of my work), and the grated deck, stern, and wet lab (where the plankton team works). The acousticians and visual observers work from dawn to dusk, while the plankton team works from dusk until a few hours before dawn. This means I have very long days and have succumbed to the napping culture aboard the ship!

When not checking in on the scientists, I have been spending my free time getting know the people on board, learning knots, riding the stationary bike on the boat deck, and attempting pull ups. It’s a wonderful life!

Oh and please enjoy this photo of me in my “gumby” suit (a protective suit in case of abandon ship).

Gail in a red survival suit, thumbs up. She's in an interior room of the ship. — Gail Tang in gumby suit. Photo Credit: Suzanne Yin.

Food Log

plated meal of eggs, hash borwns, sausage, fruit. Teacher at Sea Alumni Association mug visible, with tea bag. — Breakfast

plated meal of fried something (chicken?), salad, something else. — Breakfast

To be honest, due to limited physical activity on board, I stopped eating breakfast or even going down to the mess at that time because I have no self-control when it comes to food! The oxtail udon is the highlight so far. It was incredible! Third assistant engineer, Jason Dlugos, requested it and even brought his own rice cooker with his own rice down to dinner.

Jamie and Jason sit at a table. Jamie rests her chin on crossed arms above empty plates. Jason sips from a travel cup in his left hand, and with his right, holds a spoon over his bowl of udon and rice. The rice cooker is on the table in front of him. — Jamie Delgado (Medical Officer), Jason Dlugos (3rd Assistant Engineer) and his personal rice cooker.

Catch of the Day!

Ichthyoplankton researchers Jessie Perelman and Andrea Schmidt caught two squaretail fish (Tetragonuridae), one live fish and one in its larval stage. Not much is known about this fish. One thing we do know is that these fish live inside (!) the body of an invertebrate called salp. Below is a picture of some fish living in a salp.

three small, likely juvenile, fish swim inside a gelatinous blog called a salp. the fish in front is rounder, while the two fish flanking it are narrower. — Fish inside salp. Photo credit: Rich Carey/Shutterstock.com

July 17, 2019

David Madden: Calm Seas, Flying Fish, and Bananas, July 16, 2019

NOAA Teacher at Sea

David Madden

Aboard NOAA Ship Pisces

July 15-29, 2019

Mission: Southeast Fishery Independent Survey

Geographic Area:
Atlantic Ocean, SE US continental shelf ranging from Cape Hatteras, NC (35º30’ N, 75º19’W) to St. Lucie Inlet, FL (27º00’N, 75º59’W)

Pisces Location 7-16-19 — Here’s a picture of where we have traveled today. You can see lots of zig zags, dropping fish traps and circling back to retrieve them.

Date: July 14, 2019

Science and Technology Log

I’ve now been on Pisces for 24 hours, and I’m amazed by the complexities and logistics of this ship.

There are 32 souls on board; including 5 on deck, 6 engineers, 1 survey, 1 electronics, 7 NOAA Corps Officers, 2 stewards, and 10 scientists. It takes a well-coordinated, highly-trained group to keep things ship-shape. We have had two safety and drill meetings so far – highlighting the importance of preparedness while at sea. The three divisions on our emergency station bill are: Fire and Emergency, Man Overboard, and Abandon Ship. So far we have done an abandon ship drill, where I tried on my survival suit. Oh boy. It fit just fine. Except the hands and gloves part. For the life of me I could not get my hands to fit through the openings. Perhaps it’ll take a life or death situation. See for yourself:

TAS David Madden tries on a survival suit

During the Abandon Ship exercise we gathered next to our Life Rafts. We discussed situations and protocols and how to get the raft over the side and our bodies into the raft. We also learned about some of the survival gear within; including fishing gear (to keep folks occupied), knife, sea anchor, flares, and sea sickness pills to be taken immediately. Number one lesson – head into a real Abandon Ship well-fed and well-hydrated; you won’t be getting any water for the first 24 hours (to avoid throwing it back up, and to allow the body to acclimate to its new conditions, and because heck, you can probably go the first day without water, so why not save it?) It all reminded me of a book I read years ago called, “Adrift: Seventy-six Days Lost at Sea” by Steven Callahan.

My day consists of helping out the scientists with their fish count. This means baiting the fish traps with menhaden, dropping them off the back of the ship at the prescribed locations, circling back around 75-90 minutes later to scoop them back up. This is followed by chronicling the different fish caught – some are tossed back to the sea, others are kept for all sorts of further data collection (more soon). There’s so much crazy cool data being collected on this ship. I thought you’d like to see some of it. Here’s a diagram I made and I’ll try to include each post that highlights the fish counts. I redrew fish diagrams based off of the fish in the handy book, “Reef Fish Identification” by Paul Humann and Ned Deloach. I thought you’d also like to see what these fish look like. *Keep in mind that this first day was pretty low in fish count due to our location.

Fish Count day 1 — NOAA Pisces SEFIS Fish Count, July 16, 2019

Personal Log

David Madden aboard NOAA Ship Pisces
State Room Tag

This is now my fourth day on the ship. My journey began around 9:20 am Sunday with a ride to the airport. From there I jumped on a flight from TLH to Charlotte. Followed by a steamy flight to New Bern, NC and a 45 minute drive to Morehead City, NC. There I met up with NOAA scientist, Nate Bacheler who showed me around the ship and introduced me to everybody on board. Starting Monday morning the rest of the crew, including all of the scientists, started showing up. I’ve been getting used to life aboard a research vessel and loving the view!

General Updates:

The seas have been calm, and so far, no seasickness.
The food has been delicious – thank you Dana and Rey.
So far my favorite animal is the flying fish. I’ve seen dozens – my next task is to figure out how to get some epic footage.
The science team is very dedicated, interesting, diverse, hardworking, and super smart! Stay tuned for interviews.

Neato Facts =

NOAA Ship Pisces can travel at speeds up to 18.4 mph (16 knots). How fast is that? Let’s compare it to two famous marine organisms.

Yesterday I ate a banana. No big deal, right? Wrong. Even though I didn’t buy the banana or bring the banana onboard, some folks looked at me sideways. They said, “Do you know what it means to have a banana on a boat?!” and “Be sure to ask your students why it’s a bad idea to have bananas on a boat”. So I got to asking around and turns out that bananas and boats don’t mix well in the land of the superstitious. Supposedly, bananas cause bad luck, and many seasoned sailors refuse to let them on their boats. So far no bad luck… but then again, today has been a low fish count day (see diagram above). Might be my fault!

It’s only been two day and already my mind is spinning with interesting information, undecipherable acronyms, and new nautical terms. Stay tuned for: interviews, fish count background and techniques, swim bladder chemistry, tour of the ship, and survey science. What else would you like to learn about? Coming up: What’s a knot?! Please post questions and comments below!