Seafood lovers know the fatty marbling is what makes tuna sashimi and sushi so tasty, so for the industry, it's the fish's ...

That said, bluefin and yellowfin sushi-grade tuna come in three common sashimi cuts: otoro, chutoro, and kami. Each type comes from a different section of the fish and has a unique flavor and ...

A conveyor belt transports a whole frozen tuna fish, about a meter (3 feet) in size, into a machine that beams ultrasound waves. Sensors pick up the waves to draw a zigzagging diagram on a screen ...