A conveyor belt transports a whole frozen tuna fish, about a metre in size, into a machine dubbed "Sonofai" that beams ultrasound waves. Sensors pick up the waves to draw a zigzagging diagram on a ...

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 ...

KAWASAKI, Japan (AP) — Seafood lovers know the fatty marbling is what makes tuna sashimi and sushi so tasty, so for the ...