Nereus is a remotely operated underwater vehicle built by the Woods Hole Oceanographic Institution. It was designed to operate at depths of up to 36,000 feet (11,000 m), primarily so that it could explore the Challenger Deep, the deepest point in the Mariana Trench, which itself is the deepest known depression on the surface of the Earth. The craft reached the bottom of Challenger Deep in May 2009, having descended approximately 6.8 miles (11 km). After what mythological figure was Nereus named? Discuss
Source: The Free Dictionary