Subduction is the process of one tectonic plate sinking beneath another plate, forming a deep-sea trench. The Challenger Deep is intriguing because it lies near the oldest Pacific oceanic crust that ...

Bruce Sutphen, a Southern California veteran of America’s Cup design teams ... Buckle set a course for the Challenger Deep, more than 200 miles out to sea. But when the ship arrived above ...

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 ...

In the 1870s, the British ship HMS Challenger found deep-sea organisms while dredging and ... a ball but rather a cylindrical self-propelled design. It could go deeper than a submarine.