There are about 50,000 km (31,000 mi) of oceanic trenches worldwide, mostly around the Pacific Ocean, but also in the eastern Indian Ocean and a few other locations. The greatest ocean depth measured is in the Challenger Deep of the Mariana Trench, at a depth of 10,994 m (36,070 ft) below sea level.

deep-sea trench, any long, narrow, steep-sided depression in the ocean bottom in which occur the maximum oceanic depths, approximately 7,300 to more than 11,000 metres (24,000 to 36,000 feet). They typically form in locations where one tectonic plate subducts under another.

Apr 25, 2017 · An oceanic trench is a long and narrow depression in the ocean floor. These trenches are considered the deepest part of the ocean floor, occurring at the boundary between convergent plates and lithospheric plates.

Nov 29, 2023 · Ocean trenches occupy the deepest layer of the ocean, the hadalpelagic zone. The intense pressure, lack of sunlight, and frigid temperatures of the hadalpelagic zone make ocean trenches some of the most unique habitats on Earth.

The Mariana Trench is an oceanic trench located in the western Pacific Ocean, about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench on Earth.

Mar 20, 2025 · 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.

Nov 14, 2023 · So, where are the deepest trenches in the ocean, what incredible life thrives there, and how many thousands of feet do they lie beneath the surface? Read on to find out. 13. Ryukyu Trench-24,629 Feet Deep. The Ryukyu trench is home to a …

Nov 7, 2019 · Trenches are long, narrow and very deep and, while most are in the Pacific Ocean, can be found around the world. The deepest trench in the world, the Mariana Trench located near the Mariana Islands, is 1,580 miles long and averages just 43 miles wide.

Mar 31, 2023 · The deepest oceanic trenches in the world include the Mariana Trench in the western Pacific Ocean, the Philippine Trench in the east of the Philippines, the Tonga Trench near Tonga, the Kermadec Trench to the northeast of New Zealand, and the Kuril-Kamchatka Trench near the Kuril Islands.

The Challenger Deep in the Mariana Trench is the deepest known point in Earth's oceans. In 2010 the United States Center for Coastal & Ocean Mapping measured the depth of the Challenger Deep at 10,994 meters (36,070 feet) below sea level with an estimated vertical accuracy of ± 40 meters.