Nereus Explores the Oceans' Greatest Depth
On 31 May 2009, the deepest place in the world ocean was visited by the new hybrid unmanned submersible, Nereus. It landed on the seafloor of the Challenger Deep-at an amazing 35,768 feet down-in the Mariana Trench, spending ten hours there. The vehicle was designed, built, and operated by the Woods Hole Oceanographic Institution (WHOI) and can be operated either as a tethered remotely operated vehicle (ROV) or as an autonomous untethered vehicle (AUV).
