500
True or False
The Mariana Trench is located underwater.
TRUE: The Mariana Trench is the deepest part of the world's oceans. It is located in the western Pacific Ocean. It is a crescent-shaped scar in the Earth's crust. It reaches a maximum-known depth of 10,994 metres (36,070 ft) (± 40 metres [130 ft]) at a small slot-shaped valley in its floor known as the Challenger Deep.