Walking with Dinosaurs

Season 1

Episode 12: Sea Monsters (3) - To Hell... And Back?

Nigel Marven continues his adventures in the ancient past. Diving into the Jurassic sea, Nigel risks life and limb literally against a pair of Liopleurodon, the massive pliosaur that dominated the Jurassic oceans. Nigel then travels to "Hell's Aquarium",