We can all breathe a sigh of relief. Despite Discovery Channel's controversial Shark Week documentary 'Megalodon: The Monster Shark Lives,' none of these gargantuan creatures lurk in today's waters.
That's because the Megalodon is an extinct species of prehistoric shark. These giant sharks lived from about 28 million years ago to around 1.5 million years ago -- when they all died out.
Click through to learn the scary truth about the Megalodon, the once mighty ruler of the world's oceans.