If you want to explore the depths of the ocean, you may want to go to the deepest part: the Mariana Trench. This trench has a maximum depth of 11 kilometers (around 7 miles) and is almost five times wider than it is deep. The Mariana Trench is deeper than Mount Everest is tall and anything living there has to survive the cold water and extremely high pressure. Some animals, including the deep-sea crustaceans Hirondellea gigas, do live there —and they have recently had a human visitor. James Cameron became the first person to finish a solo submarine dive to Challenger Deep, the deepest part of the trench and consequently the planet, in 2012.