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

The deepest part of the sea is believed to be the Challenger Deep, a basin located at the southern end of the Mariana Trench in the western Pacific Ocean, which has a depth of 11,000 meters.

Positioned at the southern end of the Mariana Trench in the western Pacific Ocean, the Challenger Deep has a maximum depth of nearly 11,000 metres (36,089 feet) below sea level. Yet this is within ...