Fresh tuna is a term for tuna that never previously frozen. The fresh tuna is sell and served fresh shortly after caught.
Tuna caught at Katsuura Fish Port nearby waters using the Longline Fishing method.

Longline Fishing is fishing method invented in Japan. This fishing method used not just because the quality of tuna caught but to protect the nature and preventing overfishing.

All the fresh tuna sell by this wholesaler is caught using this fishing method, and sold in reasonable price.