The Plesiosaur appeared at the beginning of the Jurassic period, this formidable aquatic predator is distinguished by an unusual physical appearance. With a broad and relatively flat body, it moves in the depths using four swimming paddles. His long, flexible neck allowed him to hunt by throwing his head into schools of fish, trapping them in his jaws with sharp teeth. He is at the origin of many legends such as that of the Loch Ness monster.