A catfish that can weigh nearly half a ton, eat small animals and, rumor has it, even people! Adventure angler and conservationist Jakub Vagner goes face-to-face with the wels catfish in France. He doesn't get swallowed whole, but he does get a vicious bite from a six-foot-long catfish while uncovering the truth about the wels.

• Jakub Vágner
• Andrew Bowen