Krista Fleming: A Shark, a Tag, and a Lesson, September 13, 2026

NOAA Teacher at Sea

Krista Fleming

Aboard NOAA Ship Oregon II

September 5-20, 2026

Mission: Shark/Red Snapper Bottom Longline Survey, Leg 3

Geographic Area of Cruise: Western Gulf of America

Date: September 13, 2026

Weather Data from the Bridge

Latitude: 27°39.801 N

Longitude: 93°36.615 W

SE Winds 10-15 kts

Seas 3 ft at 6 seconds 

Slight chance of showers and thunderstorms.

Krista, wearing her Teacher at Sea t-shirt, poses for a photo at the railing of NOAA Ship Oregon II at sunset. the sky is dark blue above a pink horizon with just a few purple clouds; the water is almost dark purple.
TAS Krista Fleming at sunset

Science and Technology Log

I am learning to tell the difference among the different species of sharks we are catching. In this survey, we can encounter approximately 20 or more species of sharks. So far, we have seen Blacknose, Atlantic Sharpnose, Tiger, Scalloped Hammerhead, Sandbar, Spinner, Silky, Cuban Dogfish, Night, Blacktip, Bull ,and  Gulf Smoothhound sharks and more!

The blacknose sharks definitely have an attitude and have been some of the feistier sharks we have handled! They get their name from the distinctive black smudge on the tip of their nose. Their fins do not have any distinctive markings. Interestingly, adult blacknose sharks can lose the dark marking on their noses as they age.

The Atlantic Sharpnose sharks are easier to recognize as many of them have distinctive white spots along their sides, which help set them apart from some of the other species we are encountering.

When the Spinner shark came up, we had to be especially careful because of how active and powerful they can be. Learning to recognize each species by its physical characteristics, behavior, and even its attitude has quickly become one of my favorite parts of the survey.

Krista, wearing a life vest and fish gloves, holds a small shark in two hands and smiles for a photo. she is standing on the aft deck of NOAA Ship Oregon II in between two wooden measuring boards.
Krista holding Cuban dogfish shark

Shark Tags 

We administer several types of tags during the survey to monitor movement patterns and record growth in the wild. 

P-tags are internal anchor tags. An incision is made in the skin, and the tag is inserted beneath the skin so it can remain attached to the shark.

close-up view of a P-tag mounted on an insertion tool, which has a sharp tip to insert the end of the P-tag under the skin
P-tag (yellow) and insertion tool

Roto tags are external tags that can rotate freely, allowing the tag to remain visible as the shark moves.

a set of 18 orange plastic tags, still attached to one another, where each has a spinning (rotating, hence "roto") attachment point. each tag is printed with the word REWARD, an ID number, and a phone number for the finder to call. This set of tags is resting on a datasheet.
a set of roto tags

Acoustic tags are implanted inside the shark’s abdominal cavity. Tera carefully opens the abdominal cavity, inserts the tag, and then sutures the incision closed. These tags transmit a unique acoustic signal that can be detected by passive acoustic receivers stationed throughout the Gulf of America. When a tagged shark swims within range of one of these receivers, the receiver records the signal, allowing scientists to track the shark’s movements and learn more about where it travels.

close-up view of a gloved hand grasping the end of the metal acoustic tag
acoustic tag

I have been asked several times why we don’t use satellite tags more often. The biggest factor is cost. Satellite tags can range from approximately $1,500 to $5,000, depending on the type of tag and its capabilities, with additional costs associated with satellite data transmission and tracking through systems such as Argos. Because of the expense, satellite tags are typically reserved for studies where researchers need very specific information about movements over a particular geographic area or over longer distances.

Personal Log

I’m getting a handle on ship life. I’m not sure I’ll be able to sleep without the boat rocking when I return home! After much practice, I think I’ve finally gotten my sea legs. I initially thought the movement of the ship while setting lines and bringing in the haul would keep me awake, but I’m learning to sleep right through it. One evening this week, the wind picked up and we had waves around four feet, which had the Oregon II rocking pretty good. By then, I was surprised at how comfortable I had become moving around the ship.

I wasn’t prepared for how much manual labor would be required during the survey. From baiting hundreds of hooks and releasing the gear to collecting data from every organism we bring aboard, there is always something to do. In one haul alone, we collected data on 18 Red Snapper and 21 sharks, including Blacknose and Atlantic Sharpnose sharks.

Earlier this week, a 6-foot-8-inch spinner shark came aboard, and because of its size, the crew had to place it in the cradle so the science team could safely collect all of the necessary data. Tera taught me how to tag it and then let me place the tag myself. Before we released the shark, I saved the hook that had been removed from it, so I now have the hook from the very first shark I ever tagged! Tera also gave me a straightened hook from a tiger shark that had bent the hook when it broke away from the line. These may seem like small souvenirs, but they are pretty special reminders of what I am learning out here.

Krista with hook from spinner shark

Meet the Crew: Science Team Day Shift

Dr. William Trey Driggers

Trey, wearing fish gloves, stands on the deck of NOAA Ship Oregon II, holding up a very large fish by gripping it under its operculum (gill cover)
Dr. Trey Driggers with grouper

Dr. William “Trey” Driggers III is a Research Fishery Biologist with NOAA’s Southeast Fisheries Science Center and serves as the Principal Investigator and Field Party Chief for the Bottom Longline Survey aboard the Oregon II. He has spent nearly 30 years studying sharks and other marine species, and his experience and knowledge have made him an incredible resource during this survey.

Dr. Driggers was part of the team of scientists that identified the Carolina hammerhead (Sphyrna gilberti) as a distinct species. This discovery came from years of research and genetic analysis of hammerheads that had previously been identified as scalloped hammerheads.

During this trip, Dr. Driggers has taken time to share his research with me and teach me about the work we are doing, from shark identification and handling to collecting biological data and understanding how those data are used in fisheries science. I have really appreciated how willing he is to stop and explain not only what we are doing, but why we are doing it.

One of the most valuable lessons I have learned from him is how important it is for scientists to actually be in the field. Careful observations made during fieldwork can lead scientists to notice patterns, ask new questions, and ultimately make discoveries that may not have been possible from existing data alone. Dr. Driggers has shared several examples of discoveries that began with observations made in the field.

Dr. Walter Ingram

Dr. Ingram sits with his laptop at a wooden table on a deck of NOAA Ship Oregon II
Dr. Walter Ingram

Dr. Ingram is a highly respected scientist in the field of fisheries science. He earned his undergraduate degree from Jacksonville State University before studying Marine Science at the University of South Alabama. He continued his education at South Alabama, working all the way through his Ph.D. Simultaneously, he earned a master’s degree in Applied Statistics.

His Ph.D. dissertation focused on the gray triggerfish fishery in the Gulf of America, combining his expertise in marine science with his knowledge of statistics and data analysis. Just two weeks after graduating, Dr. Ingram began his career with NOAA, where he has now worked for 25 years. His favorite shark species is the goblin shark. As a matter of fact, Dr. Ingram was a co-author of the scientific paper documenting the largest goblin shark ever recorded. In 2000, a massive female goblin shark measuring an estimated 17.7–20.2 feet was caught in the northern Gulf of America, providing the first documented record of the species in the Gulf and expanding scientists’ understanding of how large these deep-sea sharks can grow. It continues to be the largest goblin shark ever recorded to date.

a massive captured goblin shark hoisted up on a fishing vessel; we can see piles of traps on the deck below, and a very small-looking fisherman manning the winch
record-breaking goblin shark, documented in Dr. Ingram’s paper
(Parsons, Glenn & Ingram, Jr, G. & Havard, Ralph. (2002). FIRST RECORD OF THE GOBLIN SHARK MITSUKURINA OWSTONI, JORDAN (FAMILY MITSUKURINIDAE) IN THE GULF OF MEXICO. Southeastern Naturalist.)

Dr. Tera Winters

Dr. Tera Winters with grouper

Dr. Tera Winters is a Senior Research Associate and survey scientist working with the NOAA fisheries team aboard the Oregon II. She is affiliated with the University of Miami’s Cooperative Institute for Marine and Atmospheric Studies (CIMAS).

What makes Dr. Winters’ career particularly interesting is her unusual path into marine science. She works part time as a veterinarian in Panama City, Florida, before adding marine science to her professional expertise. Her veterinary background gives her a unique perspective when working with fish and other marine animals. She will also be helping with coral health assessments and NOAA’s Mesophotic and Deep Benthic Communities Restoration efforts, including research focused on restoring coral communities impacted by the Deepwater Horizon oil spill.

A major part of her work involves otoliths, or the small ear stones found in bony fishes. Otoliths grow throughout a fish’s life and can be examined to estimate the animal’s age and growth rate. Dr. Winters has processed thousands of red snapper otoliths, using techniques including scanning, imaging, weighing, and aging. This information becomes an important part of fisheries stock assessments because scientists need to understand how quickly fish grow and when they reach reproductive maturity.

Her work demonstrates an important point about fisheries science: what happens after a fish comes aboard the ship can be just as important as what happens on deck. The measurements and samples collected during each survey eventually become data that scientists and fisheries managers can use to understand population health and make decisions about sustainable catch levels.

Dr. Tera Winters has become one of my mentors aboard the Oregon II. She has been teaching me how to accurately collect and record fisheries data and, one of the most exciting parts for me, how to safely and properly tag sharks. Working alongside her has given me a greater appreciation for the skill, precision, and attention to detail required during a fisheries survey. Every measurement and observation matters because these data become part of the larger body of information scientists use to understand fish and shark populations. As a teacher, I am especially excited to take what I am learning from Dr. Winters and bring these real-world experiences back to my students. Tera’s favorite shark is the thresher shark.

LTJG Heather Gaughan

a woman wearing a life vest and fish gloves kneels next to a wooden fish measuring board on the deck of NOAA Ship Oregon II. she uses her right hand to hold the tail of a fish against the measuring board, while her left hand grasps a pile of fishing line
LTJG Heather Gaughan measuring a fish

LTJG Gaughan is a NOAA Corps officer who has extensive experience working aboard NOAA research vessels. She earned her bachelor’s degree in Marine Science, Safety, and Environmental Protection from Massachusetts Maritime Academy and was commissioned into the NOAA Corps in 2021. Before joining NOAA Corps, she gained experience through internships and marine research, including work on ocean acidification and sea scallops and with NOAA’s Office of Education.

During this survey aboard the Oregon II, Heather is serving as the Operations Officer while also filling in for the current Senior Survey Technician. Her responsibilities involve much more than the science happening on deck. She stands watches, helps operate the ship, and even drives the ship, giving her a unique role that connects the vessel’s operations with the scientific mission. Watching all of the different responsibilities she manages has given me a greater appreciation for how many people and skills it takes to successfully conduct a NOAA research survey.

Heather has spent lots of time at sea aboard NOAA research vessels and has served in a variety of roles, including Officer of the Deck, Navigation Officer, Environmental Compliance Officer, NOAA Diver, Rescue Swimmer, and Medical Person in Charge. During her land assignment, she served as the Mission & Support Branch Specialist and Port Captain for the Northeast Fisheries Science Center in Woods Hole, MA. In that position, she also sailed as the acting Junior Officer-in-Charge of the R/V Gloria Michelle. In June 2026, she received her Master of Science in Maritime Business Management from Massachusetts Maritime Academy.  Her experience demonstrates just how diverse a career with NOAA Corps can be.

And, of course, I had to ask her favorite shark! Her favorite is the Great Hammerhead. It seems fitting for someone who spends so much time working with sharks and fisheries research. Getting to know Heather has been another reminder that there are many different career paths within marine science, and that NOAA’s missions depend on people with a wide range of expertise and responsibilities.

Ryan O’Malley

Ryan O’Malley weighing a fish

Mr. O’Malley is a volunteer from Maryland on his very first NOAA Survey. He just graduated with his Bachelor’s Degree in Marine Science from Coastal Carolina University. He came on this trip to gain experience in the field, particularly with Elasmobranchs (cartilaginous fishes like sharks, skates, and rays). His favorite shark species are Blacktips. He has some experience with shark taxonomy and has been a wealth of information as we bring sharks onto the deck to collect data.


Did You Know? Fish vs. Fishes

Did you know there is a difference between fish and fishes? Both words are correct, but scientists use them in different ways.

  • Fish is the plural when you are talking about multiple individual fish, generally or when they are the same species.
    Example: We caught 15 fish during today’s survey.
  • Fishes is used when referring to multiple species of fish or to fish as distinct groups.
    Example: Scientists study the fishes of the Gulf of America.

So, if Dr. Ingram is analyzing a haul containing several individual red snapper, you would say he is analyzing fish. If he is comparing red snapper, gray triggerfish, grouper, and other species, you could describe his work as studying the fishes of the Gulf of America.

A simple way to remember it:
🐟 Fish = individuals
🐠 🐠 Fishes = two or more individuals of different species

In fisheries science, choosing between fish and fishes can actually be important because scientists are often distinguishing between individual animals and different species or populations.

Chris Sanborn: 2 Days Shark Tagging, July 15, 2015

NOAA Teacher at Sea
Christopher Sanborn
Aboard SRV C.E Stillwell
July 13 – 17, 2015

Mission: Cooperative Atlantic States Shark Pupping and Nursery (COASTSPAN) survey
Geographical area of cruise: Delaware Bay
Date: July 15, 2015

Weather

Day 1 weather was mostly overcast 5-10 mph wind with 2-3 ft seas though the swells were larger according to the other individuals on the boat.

Day 2 was forecasted for chance of storms with 10-15 mph winds with 2-3 ft seas..

Science and Technology log

We just finished day two of our shark tagging survey in the Delaware Bay aboard the C.E. Stillwell, a 21 ft. Boston Whaler center console.  The boat seems extremely small at times with 4 people and lots of gear on board.  The crew that I am aboard ship with are Nathan Keith, Natural Resource Management Specialist, Ben Church, Boat Captain for this shark survey, and Matt Pezzullo,Chief Scientist for this shark survey.  Our boat is docked at the University of Delaware Marine Operations pier located in Lewes, DE.  Day 1 of our tagging was mostly spent on the New Jersey side of Delaware Bay.  We left port at 6:00 a.m. and steamed roughly 14 miles across the bay to make our first set. The seas were fairly rough which made for a bumpy ride.

Center Console C.E Stillwell. Photo courtesy of Nathan Keith
Center Console C.E Stillwell. Photo courtesy of Nathan Keith

Sets are either made with 25 large circle hooks or 50 small circle hooks on a gangion extending from the mainline which is weighted to the bottom.  The mainline is 1000 ft long, plus buoy line which extends from beyond the last hook up to the marker buoy on either end of the line. Our first day on the water we did 4 large sets and 3 small sets.  A large set is 25 large hooks that soak for 2 hours while a small set is 50 smaller hooks that soak for 30 min. We arrived back at port at 7:00 p.m. Day 2 we did 3 large sets and 4 small sets leaving port at 6:00 a.m and arriving back in port at about 5:30 p.m.  All hooks are baited with mackerel as seen on the large hooks in the following video.

Nathan Keith baiting smaller hooks.
Nathan Keith baiting smaller hooks.

The long line is retrieved by hand,  Sharks 130 cm and below are brought on board the boat for biological workup which includes fork length, pelvic and dorsal girth, sex, weight (if conditions allow) and then tagged.

Ben and I working up a shark on board the boat. Photo courtesy of Nathan Keith.
Ben and I working up a shark on board the boat. Photo courtesy of Nathan Keith.

Ben Church holding a Sandbar Shark that had been bit by a Sand Tiger Shark while on the line, while I read the weight. Photo courtesy of Nathan Keith.
Ben Church holding a shark while I read the weight. Photo courtesy of Nathan Keith.

Sharks greater than 130 cm get the full biological workup except weights.  These sharks are tail roped and cleated to the side of the vessel.

Me Dart Tagging a Sand Tiger Shark while Matt Pezzullo looks on. Photo courtesy of Nathan Keith.
Me Dart Tagging a Sand Tiger Shark while Matt Pezzullo looks on. Photo courtesy of Nathan Keith.

All sharks under 100 cm receive a roto tag in the dorsal fin while sharks over 100 cm receive the dart tag seen in the picture.

 Day 1 Sharks:

    58 Total Sharks tagged

        45 Sandbar Sharks (Carcharhinus plumbeus)

        11 Sand Tiger Sharks (Carcharias taurus)

        1 Blacktip Shark  (Carcharhinus limbatus)

        1 Atlantic Sharpnose  (Rhizoprionodon terraenovae)

Day 2 Sharks:

    44 Total Sharks tagged

        43 Sandbar Sharks  (Carcharhinus plumbeus)

        1 Sand Tiger Shark (Carcharias taurus)

We also had some bycatch with a number of rays.  The largest ray was 176 cm across which had an enormous amount of power.  All rays are measured across the disk width and sexed.  We caught Bullnose (Myliobatis freminvillii) , Bluntnose (Dasyatis say), Southern Sting Ray (Dasyatis americana), and Spiny Butterfly (Gymnura altavela).  We also caught on line a Clearnose Skate (Raja eglanteria) and a Weakfish (Cynoscion regalis).

 

Personal Blog:

Besides the beating we take in a 21 ft. center console motoring miles between sets, back and forth, the extreme physical toll of pulling in a long line is very taxing.  Day 1 of our survey was exciting as we caught numerous large Sandbar and Sand Tiger sharks.  Although it was an adrenaline filled experience I can say I was extremely spent at the end of the day!  Day 2 we only caught a few sharks that we were unable to bring on board the boat.  The biggest problem with day 2 was the ever-changing weather.  Some of the day was even spent in the pouring rain.  Boat operator Ben Church and Chief Scientist Matt Pezzullo were constantly aware of weather conditions for safety as well as assuring that setting and hauling of gear could be set and hauled safely and in a timely manner. Sharks that are brought on board are secured just underneath the jaw as you can seen in many of the pictures. The skin of the shark is very similar to sandpaper for anyone that has felt a shark or dissected one in my class.  The skin on my hands has worn away and new skin has been exposed.

Day 3 starts early in the morning so I am headed to bed!