August 11, 2025 — Maine’s coastal communities have been hooked on the Atlantic bluefin tuna since at least the late 1880s—first as bycatch, until the 1930s when the fish became a prized target in fishing tournaments. Through the subsequent decades, bluefin tuna have and continue to support working waterfronts in Maine and beyond.
Despite a decline in prices, a single bluefin tuna can land over $10,000, and in 2024 alone, the National Oceanic and Atmospheric Administration reported that commercial and recreational landings exceeded 3.5 million pounds, fueling a range of economic activities from food markets to boat building and gear sales.
Sammi Nadeau (’18, ’21G), the lab manager at UMaine’s Pelagic Fisheries Lab, conducted a study recently published in the journal Marine Ecology Progress Series that illustrated a shift in the tuna’s diet and described the role of foraging in the tuna’s lifecycle.
“You can imagine that those migrations from across the ocean and things like reproduction are extremely energetically demanding,” said Nadeau, “So being able to get a really good meal, fill back up and get ready to go back across the ocean is important to fulfill their life history.”