Nereus, the robotic submarine developed at the Woods Hole Oceanographic Institute, has reached the depths of the Challenger Deep in the Pacific Ocean on May 31, becoming only the third craft to reach the abyss in history. Resurrected to swim down...

Researchers at Woods Hole Oceanographic Institution have developed a new robotic submarine dubbed the Nereus, which’ll be the first to dive down a depth of 11,000 meters, when it is let lose to attain the feat at Challenger Deep in the Pacific...