Liopleurodon, the "Smooth-Sided Teeth," was a genus of marine reptiles, specifically of short-necked plesiosaurs called pliosaurs. Liopleurodon's long skull was approximately one-fifth of its total length; therefore, the largest known specimen, with a head length of 126 centimeters, was gigantic at over six meters long. Although this is certainly a large size, it stands in stark contrast to BBC's popular but erroneous depiction of it as a 25-meter-long monster. Liopleurodon had four strong, paddle-like limbs that propelled it forward quickly, a feature that is common amongst plesiosaurs. With the great acceleration provided by its flippers and a keen sense of smell, Liopleurodon may have been an ambush predator. With fossils found all across Europe, Liopleurodon prowled the waves of the middle- to late-Jurassic island continent. As an apex predator, it struck fear into the hearts of any creature that may have crossed its path. It was a piscivore and a carnivore with its diet including giant Jurassic fishes, sharks, ichthyosaurs, and even other plesiosaurs, like Cryptoclidus, which have been found preserved with Liopleurodon bite marks.