There is no mistaking the 15 cm (6 in) teeth of the largest apex predator, the megalodon. Getting bitten by this beast would feel like being crushed by three African elephants stacked on top of each ...

Victor Vescovo descended nearly 11km (seven miles) to the deepest place in the ocean - the Pacific Ocean's Mariana Trench. He spent four hours exploring the bottom of the trench in his submersible ...

Following is a transcript of the video. Narrator: The Mariana Trench is the deepest point on Earth. So deep that if you dropped Mount Everest inside, its peak would still be more than a kilometer ...

The first explorers visited the trench in 1960 on a brief expedition, after which there had been no missions until Hollywood director James Cameron made the first solo trip to the bottom in 2012.

I write about the ocean, climate change, and the future of our planet. For example, our knowledge of Megalodon's existence comes from the fossil record, which reveals teeth designed for hunting ...

As one of the largest predators to have ever lived, megalodon captures people's imagination - and for good reason. But was this apex predator simply a beefed-up great white shark, and is it still ...

The Calvert Marine Museum this month unveiled a new exhibit featuring a never-before-seen set of teeth from an extinct ...

The Calvert Marine Museum this month unveiled a new exhibit featuring a never-before-seen set of teeth from an extinct ...

A prehistoric food fight may have spelled the end for the megalodon, the largest shark that ever lived. A study of the ocean giant's fossil teeth suggests it had to compete for food with another ...

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 ...

As one of the largest predators to have ever lived, megalodon captures people's imagination - and for good reason. But was this apex predator simply a beefed-up great white shark, and is it still ...