For years, the megalodon has been imagined as a monstrous version of the great white shark. Depictions in movies and documentaries show a stocky, torpedo-shaped predator, built for speed and power.

Scientists have discovered that the long-extinct megalodon, also known as the megatooth shark, had a body temperature 7 degrees Celsius warmer than the surrounding seawater. This information might ...

if cows swam in the sea. How big are the megalodon's teeth? Watch the video above to see how big the megalodon's tooth compares to that of a great white shark. You can also see how big it is in ...