Mariana Trench Mariana Trench a mile of water Challenger Deep, Challenger Deep https://geology.com/records/deepest-part-of-the-ocean.shtml geology a mile of water www.geology.com/records/ Mariana Trench part Challenger Deep, the Mariana Trench Marianas Trench deepest the Challenger Deep just over 10km 36,000 feet Challenger Deep, the Mariana Trench -of-the-ocean.shtml 36,070 feet 36,070 feet Challenger Deep, a mile of water 36,070 feet mariana trench Geology Mariana Trench Challenger Deep, 36,070 feet Challenger Deep, a mile of water Deepest Part of the Ocean - Deepest Ocean Trench 36,070 feet Marianas Trench first discovered by the British Survey ship HMS Challenger Deepest Part of the Ocean a mile of water