Following is a transcript of the video. Narrator: If there's one thing you know about puffer fish, it's that they can do this. When aggravated by a predator, they, you know, puff up. Some puffers ...

The fish has become increasingly common on the Mediterranean coast, researchers warned in a study carried out by the Faculty of National Sciences at the Juraj Dobrila University of Pula in Croatia.

There are over 120 species of puffer fish, and 22 different kinds are approved by the Japanese government for use in restaurants. But one is more prized, and more poisonous, than the others ...