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, ...

Pufferfish are among the most unique fish in the sea—and sometimes in freshwater too! As their name suggests, pufferfish can inflate like a balloon, transforming from a seemingly ordinary fish into a ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Add Yahoo as a preferred source to see more of our stories on Google. Pufferfish can inflate up to three times their normal size by rapidly swallowing water to appear larger and deter predators.