Hybrid Vehicle Nereus

On May 31, 2009, this one-of-a-kind hybrid robotic vehicle reached the deepest part of the ocean—the Marianas Trench, located in the western Pacific Ocean, 10,902 meters (6.8 miles) below the surface. That makes the remotely operated Nereus the deepest-diving vehicle currently in service.


Robert Elder, Woods Hole Oceanographic Institution