NOAA Teacher at Sea
Mandy Freeman
Aboard NOAA Ship Henry B. Bigelow
May 19 – May 29, 2026
Mission: Sea Scallop HabCam Survey
Geographic Area of Cruise: Northeast Atlantic Ocean
Date: May 28, 2026
Weather Data from Georges Bank
Latitude: 41° 59. 926′ N
Longitude: 067° 11. 176′ W
Science and Technology
Why survey scallops? The fishery stock assessments study the size and age composition of approximately 40 fish and invertebrate species in the New England/Mid-Atlantic area. This data informs stakeholders and policymakers of the abundance of each species, the impact of the fishing industry, and evaluates biological aspects of the ecosystem. (Fishery Stock Assessments in New England and the Mid-Atlantic) The data collected by NOAA and other sources (including commercial and recreational fishermen) is then used to determine sustainable harvest levels for each species (See graphic below). Find more information HERE.
Credit: NOAA Fisheries
How is this survey conducted? The Atlantic Sea Scallop survey has four main components: dredge, trawl, a long-range autonomous underwater vehicle (AUV), and Habitat Mapping Camera (HabCam).
– A dredge has a metal frame with a chain-mesh bag that collect scallops off the sea floor, like raking leaves in your yard.
– The trawl uses a net to scoop up swimming scallops without digging into the sediment.
– The HabCam, what I worked with on this survey, is a boat-towed camera system that takes continuous paired photos, 5-6 pairs per second, as it moves through the water (NOAA survey preparation materials).
– The Autonomous Underwater Vehicle (AUV), “Stella,” has the same camera system as the HabCam, but can be programmed to operate without a human pilot.
(Read this for more details: Long-Running Sea Scallop Survey Diversifies for the Future)
“Approximately 4 million images of the ocean bottom are collected during an annual survey. Humans are annotating about 1 in 50 of the images.” (NOAA Fisheries)
What is a HabCam? Watch THIS VIDEO!
What do the HabCam images LOOK like? The HabCam system captures high-resolution images and transmits them to a computer for processing and annotating. This is what that looks like from the pilot station:
Can you guess what these images are? Some examples of images captured by HabCam!
What areas were sampled? NOAA uses past data to determine the sampling tracks. This was what our survey track looked like for this trip.
The Atlantic Sea Scallop Management Program is broad and complex, involving many different aspects of research, management, and monitoring. You can read more about it at the NOAA Sea Scallop Management page.
Personal Log
On NOAA Ship Henry B. Bigelow, there are both two- and four-person staterooms. Megan and Kristen are on day shift, so I usually only see them during watch changes. Sandy, however, is on night shift with me.
Sandy Sutherland is a research fishery biologist at the Northeast Fisheries Science Center. She earned a bachelor’s degree from Eckerd College and a master’s degree from University of Rhode Island Graduate School of Oceanography. She started her career as an outdoor educator with Nature’s Classroom.
At the Northeast Fisheries Science Center Woods Hole lab, Sandy conducts age determinations for haddock and Atlantic mackerel and measures growth rings for sea scallops. Using a dissecting microscope, she determines the age of fish earbones (otoliths) — a process she says feels a bit like playing a video game. She also conducts research related to age determinations and created Excel templates used to calculate measures of age precision.
She says important skills for this type of work include paying close attention to detail, writing legibly, and being able to see how all the pieces fit together to understand the “big picture.”
When she’s not working, Sandy enjoys birding, reading, and volunteering at science fiction conventions such as Readercon. Although she can’t choose a favorite bird, she says she would be especially excited to spot any species of albatross.
Did you know sea scallops can swim?
They rapidly clap their shells together to move away from predators, like sea stars. And we can actually “see” this from the HabCam images! In the image below, the sea scallop appears to be swimming away from a predator. A swimming scallop can be identified by the two dark “shadows” visible on either side of it. Can you see the predator???!
Careers at Sea
Meet Jonathan Duquette, a Biological Science Technician with the Ecosystems Surveys Branch at the NOAA Northeast Fisheries Science Center. He specializes in shellfish surveys involving Atlantic sea scallops, Atlantic Northern Shrimp, Ocean Quahogs, and Atlantic Surfclams. Jonathan plays an integral role in critical research initiatives, including the high-resolution HabCam (Habitat Camera Array) and sea scallop dredge surveys. His work at sea and ashore supports the rigorous monitoring, data analysis, and ecological assessments essential for sustainable fisheries management and marine ecosystem conservation in the Northeast.
Jonathan has had a lifelong obsession with the sea, sharks, and fishing since an early age. After graduating with a BS in Marine Biology from the University of New England, Jonathan became a fisheries observer collecting data for the federal government on vessels in Alaska. After working as an observer on King Crab fishing vessels (think TV’s “Deadliest Catch”), longline vessels, and Scallop fishing vessels, he returned to the East Coast where he worked as a sternman on lobster fishing vessels in Boothbay Harbor Maine. In 2003, Jonathan joined the Ecosystems Surveys Branch at NOAA’s Northeast Fisheries Science Center, a role that continues today.
I asked him if he had any advice for “his younger self.” He said, “I’d tell myself that persistence pays off, and that you’re really never gonna be done learning, it’s a lifelong pursuit. Don’t be afraid of making mistakes, that’s part of the journey.”
Fun fact: While on a research cruise in 2024, Jonathan and other scientists discovered an ice-age jawbone from a Walrus, off the coast of Virginia! Read about his exciting discovery HERE!
Meet Zach Fyke, he is a Biological Science Technician with the Northeast Fisheries Science Center Ecosystems Survey Branch. He graduated from Michigan State University in 2017 with a degree in Fisheries and Wildlife. After college, he began his marine science career as a fisheries observer based out of Point Judith, Rhode Island, before taking on several positions within NOAA Fisheries. Today, he primarily works on shellfish surveys involving Atlantic sea scallops, Atlantic Northern Shrimp, Ocean Quahogs, and Atlantic Surfclams.
Interestingly, Zach originally planned to be an educator, but after an elective Intro-Biology course, he found himself declaring into the major of Fisheries and Wildlife. Near the time Zach was graduating with a degree in Fisheries, a college professor at Michigan State University, who had worked at the Woods Hole lab in the 90’s, encouraged him to “try somewhere new for a few years.” This was a driving factor on why Zach moved to the East coast to begin a career in Marine Fisheries. Zach describes himself as an “average student,” but says he always enjoyed hands-on activities and learning by doing. That passion for fieldwork and adventure eventually led him to a career at sea.
His advice to students interested in science careers is simple: don’t be afraid to move away and try something new. Some of the best opportunities are found outside of your comfort zone.
When he’s not working, Zach enjoys photography and has recently started photographing birds. He jokes that birding is a lot like “real-life Pokémon.” His favorite bird is the Belted Kingfisher.
Personal Reflection
Scallops may blend into the seafloor until they suddenly swim off in a burst of movement — a fitting reminder that sometimes growth happens when we are willing to move beyond what feels comfortable. Whether it’s learning to annotate images, transitioning to night shift, or piloting the HabCam, this journey has been a reminder to BE the Scallop in a sea of sand dollars.
I am enjoying reading your blogs about your experience! You learned so much and got to see so much. Have you gotten your land legs back!