Tuna - popular ocean fish

Tuna is a large predatory ocean fish from the mackerel family, inhabiting warm oceans worldwide. Its firm red flesh is rich in protein, omega-3 fatty acids, and vitamin D. In Japanese cuisine, tuna is the foundation of sashimi and sushi, while in Mediterranean cuisine it is grilled as a steak. Canned tuna is one of the best-selling fish products globally. Several species exist, including yellowfin, albacore, and the highly prized bluefin tuna, which is endangered due to overfishing.