A terrifying sight in ancient waters, the megalodon shark was once the most feared creature in the sea.

The megalodon went extinct 3.6 million years ago, and is thought to be the largest shark that ever swam the Earth. But there's debate over what it looked like. Most scientists have described it as ...

Megalodon have always been compared to the modern great white shark. Scientists have found a reason why it shouldn't be.

Whether the ancient megalodon was relatively narrow or wide remains the subject of hot paleontological debate.

Study: Megalodon’s body shape was closer to a lemon shark Also: Baby megalodons were likely the size of great white sharks and capable of hunting marine mammals.

Megalodons, the huge prehistoric sharks depicted in movies such as “The Meg,” had more slender bodies than was previously thought, according to a new study.