The Pacific Ocean (from the Latin name Mare Pacificum, "peaceful sea", bestowed upon it by the Portuguese explorer Ferdinand Magellan) is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Antarctic in the south, bounded by Asia and Australia on the west and the Americas on the east. The equator subdivides it into the North Pacific Ocean and South Pacific Ocean. The Mariana Trench in the western North Pacific is the deepest point in the Pacific and the world, reaching a depth of 10,911 metres.