Science
2 stories Updated for U.S. readers
Science · Challenger Deep
Mariana Trench and Challenger Deep: What Scientists Know
The geology, depth, habitats and exploration history of the Mariana Trench. The Mariana Trench lies in the western Pacific. Its Challenge...
Science · Challenger Deep
How Deep Is the Ocean? Average Depth, Deepest Point and Challenger Deep
A search-friendly guide to ocean depth measurements and the deepest known point. NOAA lists the average ocean depth at about 3,682 meters...