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 ...

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.

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 ...

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 ...

Not anymore. Kelly Walsh, the son of the great ocean explorer Don Walsh, has just descended to the bottom of the Mariana Trench, almost 11km down in the Pacific. He made the dive 60 years after ...

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 ...

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 ...

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 ...

A military vessel on the search for an unidentified submersible finds themselves face to face with a giant shark, forced to use only what they have on board to defend themselves from the monstrous ...

While exploring a 25,000 feet-deep trench in the Philippine Sea ... are attacked by a group of Megalodon sharks, which leads them to discover a rogue mining operation that threatens to unleash ...