Could Japan's craving for this fish end up wiping out what is a favourite sushi staple? Ed Butler examines a classic case of overfishing, and whether fish farming is the answer. Show more
Discover 11,128,835 listings and 280,058 playable programmes from the BBC
Could Japan's craving for this fish end up wiping out what is a favourite sushi staple? Ed Butler examines a classic case of overfishing, and whether fish farming is the answer. Show more