Chasing Monsters

Growing to over 800 lbs, the goliath grouper is among the world's largest marine fish. After meeting a diver who was attacked by one, Cyril goes on a mission to catch these giants using a primitive and dangerous technique... And he'll even have to dive in shark infested waters and use himself as bait!

Recruited by researchers to catch the ocean's most feared predators and swab their razor sharp teeth to help develop antibiotics that save shark-bite victims, Cyril must brave crocodiles and raging sharks to fulfil this perilous mission.

Using only his hands and feet as bait, Cyril's on a mission to catch a powerful fish that can grow almost as big as a man: the catfish! It's one of the most extreme and dangerous fishing techniques in the world, and was practiced by Native Americans hundreds of years ago.

On a mission to catch one of the largest freshwater fish in the world, in one of the most remote places on the planet, Cyril's survival skills are about to be tested.

Feared for its needle-like fangs, the alligator gar fish goes back more than 100 million years but has been hunted almost to extinction. Cyril is in Texas helping biologists learn how to reestablish the species, but to do so he has to get past some other snap-happy beasts.

To get to Brazil's largest prehistoric fish, the endangered arapaima, Cyril must wade through swamps infested with piranhas, caimans and anacondas.