to the deepest place in the ocean - the Pacific Ocean's Mariana Trench. He spent four hours exploring the bottom of the trench in his submersible, built to withstand the immense pressure of the deep.

The cutting-edge system can deploy cables more than 11,000 meters (36,089 feet) below sea level, making it suitable for the Challenger Deep, the deepest part of the ocean in the Mariana Trench, ...

The cutting-edge system can deploy cables more than 11,000 meters (36,089 feet) below sea level, making it suitable for the Challenger Deep, the deepest part of the ocean in the Mariana Trench ...