Tuna is a versatile and popular seafood known for its mild flavor and firm, meaty texture. It is a saltwater fish that belongs to the mackerel family. Tuna is highly regarded for its high protein content and is a good source of omega-3 fatty acids, which are beneficial for heart health. There are various species of tuna, including yellowfin, skipjack, albacore, and bluefin, each with its own unique characteristics. Tuna can be prepared in numerous ways, such as grilling, searing, baking, or even enjoyed raw in sushi and sashimi. It is commonly used in salads, sandwiches, pasta dishes, and casseroles.