What is the Deepest Ocean in the World? The Mariana Trench is renowned as the deepest ocean in the world, a natural wonder that never ceases to amaze. It’s located in the western Pacific Ocean, east of the Mariana Islands, and it stretches over 1,550 miles (2,500 kilometers) long. Oceans and their marginal seas are the world ’s largest, deepest waterbodies. The world ’s deepest point, the Challenger Deep , is located in the Pacific Ocean . Mariana Trench (Marianas Trench), deepest of the world ’s deep -sea trenches. It stretches for more than 1,580 miles (2,540 km) with a mean width of 43 miles (69 km) and is part of the western Pacific system of oceanic trenches coinciding with subduction zones. Read here to learn more about the Mariana Trench . Discover the deepest oceans and seas on Earth , from the Pacific Ocean’s Mariana Trench to the Caribbean and the Arctic. Learn how deep they reach and why these regions are vital to ocean science.
