S31 Ep10: The Mystery of Eels Preview
Video duration: 0:30
There are some things in nature we just don't understand, and this creature is one of them. Eels are coveted by the Japanese, sacred in New Zealand, and making people millionaires in Maine. But that's only part of the story. "The Mystery of Eels" premieres Wednesday, April 17 at 8/7c on PBS (check local listings).