I recently participated in a three-week-long, National Science Foundation-funded research cruise to the Mariana Trench. Our ...

Ocean depth is divided into zones: littoral, bathyal, abyssal and hadal ... so this figure is only an estimate. Challenger Deep, in the Mariana Trench, is the deepest point in the ocean known so far, ...

Eventually, you’ll reach the hadal zone, named for the Greek god Hades ... you’ll find the deepest place on the face of our planet. The Mariana Trench runs more than 1,500 miles long and ...

The Mariana Trench is the deepest place on Earth, and we're still in the dark about much of the life that calls it home. Here are just a few of the trench's eye-popping residents.