Robo-sub Nereus scales the deepest trench, releases photo

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 to a depth of 11,000 meters, the remotely operated Nereus efficiently scaled the depth in the Mariana Trench, becoming world's deepest-diving vehicle. Built with chemical sensors, sonar, and digital camera the sub has been surveying the deep ocean and capably releasing photos, one of which (pictured above) has been made official.

nereus submarine

nereus robotic sub

This what the sub actually looks like

Via: NewScientist