The Pacific bluefin tuna population struggled for decades, nose-diving by over 98 percent since the onset of industrial fishing. Now, thanks in part to the work of our science, policy, and sustainable seafood teams, this remarkable ocean traveler is on the road to recovery.
Pacific bluefin tuna migrate across ocean basins, which can make them difficult to protect. By tagging and tracking Pacific bluefin, our science team has learned where and when — and even why — they migrate, spawn, and feed. Tagging also alerts us to potential challenges, such as where the tuna are susceptible to fishing fleets.
Our policy team brings this scientific knowledge to key forums that decide how to manage this vulnerable species. These efforts paid off in 2017 when Pacific fishing nations made a landmark agreement aimed at recovering the Pacific bluefin tuna population to a sustainable level, starting with a commitment to rebuild the population to 20 percent of historic levels by 2034. This is the minimum level scientists consider necessary to protect many fish species. According to the latest international assessment, Pacific bluefin tuna stocks now exceed this, meeting the target a decade ahead of schedule.
In 2024, Pacific bluefin tuna fisheries in the Eastern Pacific region earned a yellow rating for environmental sustainability from the Aquarium’s Seafood Watch program. This is a first since the program began conducting assessments 25 years ago. Pacific bluefin tuna’s recovery is something to be celebrated, but there’s still work to do.
To prevent this iconic fishery from backsliding, Pacific nations must adopt a new population target and a long-term and precautionary management plan that carefully monitors population levels and adjusts catch limits as needed.
We’re committed to working with countries, markets, and other stakeholders to secure a long-term management plan that will ensure the Pacific bluefin tuna population not only survives, but thrives.
Learn more about the Pacific Bluefin tuna