(AP Photo/Ayaka McGill) A knife cuts into a fatty cut of tuna at a market in Tokyo Thursday, April 10, 2025. (AP Photo/Ayaka McGill) Tuna goes into a special machine called Sonofai that can detect the ...

As one of the most widely consumed fish species, tuna can accumulate high levels of mercury due to its position at the top of the food chain. While tuna is a rich source of protein and omega-3 ...

KAWASAKI, Japan (AP) — Seafood lovers know the fatty marbling is what makes tuna sashimi and sushi so tasty, so for the industry, it's the fish's level of fattiness that's used to judge its ...