The Mariana Trench runs more than 1,500 miles long and ... and they feed on the falling organic material (dead plants, animals, and waste) known as marine snow. At those pressures, the calcium ...

In the Mariana Trench, animals have evolved features that you can't find anywhere else on Earth. The trench is a geological feature so massive, so vast and so imposing that it makes Mount Everest look ...

Narrator: The Mariana Trench is the deepest point on Earth ... Now, like lobsters, these animals have hard exoskeletons made of calcium carbonate, which you normally wouldn't find down here ...

In fact, more people have been to the moon than to the bottom of the Mariana Trench. That's because, the Mariana Trench's environment is very hostile. Sunlight cannot penetrate deep water so it's ...