For millions of years, a massive shark more than twice as huge as the modern-day great white shark cruised the depths of the ocean, attacking and devouring prey. Fossil remains reveal megalodon to have been more than 50 feet long, with razor-sharp teeth, each the size of a human hand, and jaws so large it could swallow prey larger than a common dolphin!

Find out more about the megalodon and its prehistoric world.