Tuna

A tuna is a saltwater finfish that belongs to the mackerel family (Scombridae). They are a group of powerful, fast-swimming fish found throughout the world's oceans, and they are highly valued as a food source.

Tuna have a sleek, streamlined body built for speed. Their bodies are a dark metallic blue on the back and silvery-white on the belly. They are unique among fish in their ability to maintain a body temperature warmer than the surrounding water, which allows them to live in a wider range of temperatures and swim at high speeds. There are several species of tuna, with the largest, the Bluefin tuna, capable of reaching over 10 feet in length and weighing more than 1,000 pounds.

Tuna are pelagic, meaning they live in the open ocean and are highly migratory, often traveling across entire ocean basins. They are apex predators that hunt in schools. Their diet consists of smaller fish, squid, and crustaceans.

Tuna is one of the most commercially valuable fish in the world. It is a major global food source, sold fresh, frozen, and canned. Common species in the market include Skipjack, Yellowfin, and Albacore. Due to their popularity, some tuna species, particularly Bluefin, have been a subject of conservation concern due to overfishing.