October 18, 2018 — Large Pacific bluefin tuna not seen in California waters for decades have reappeared, to the delight of fishing enthusiasts and scientists, as global conservation efforts have proven effective for one of the ocean’s priciest and most sought-after fish.
Overfishing of bluefin tuna spurred by a growing global appetite for sushi resulted in a critical decline in stocks over decades. But measures by the United States, Japan, Mexico and others to limit their take have led to population growth, though tuna populations are still below historic levels.
Gerard DiNardo, director of the Fisheries Resources Division at Southwest Fisheries Science Center, a division of the U.S. National Oceanic and Atmospheric Administration (NOAA) in La Jolla, California, said there has been an increase in population as well as size of the bluefin because of those efforts.
“This is management and effective management and it actually is working'” said DiNardo.
The Center for Biological Diversity said in August 2017 that the Pacific bluefin had been overfished to less than 3 percent of its historic population. The National Marine Fisheries Service announced in October 2016 that it was considering listing the Pacific bluefin, but it subsequently concluded that protections were not warranted.