The Aleutian Trench is located in the Pacific Ocean between the Gulf of Alaska and the Komandor Islands and extends for 3,400 km. The deepest part of the Aleutian trench has been measured at 8,109 meters deep (26,604 ft or 5 mi).
The Kuril-Kamchatka Trench lies off the southeast coast of Kamchatka with a maximum depth of 10,542 meters (34,587 ft). Here, the Pacific Plate is being subducted beneath the Okhotsk Plate along the trench, resulting in intense volcanism.
The Japan Trench is a deep submarine trench lying at 9,000 m (29,527 ft or 5.59 mi) east of the Japanese islands in the western North Pacific Ocean. The 8,513 meters (27,929-ft) Tuscarora Deep (north) was once considered the deepest point in the world.
The Izu-Bonin trench (also known as the Izu-Ogasawara Trench) is an oceanic trench in the western Pacific Ocean and is 9,810 meters (32,087 ft) at its deepest. It stretches from Japan to the northernmost section of Mariana Trench and is an extension of the Japan Trench.
The Philippine Trench is a submarine trench to the east of the Philippines in the Pacific Ocean with a length of ~ 1,320 km and a width of 30 km. Its deepest point, the Galathea Depth, has a depth of 10,882 meters (35,702 ft, 6.76 mi).
The Mariana Trench is the deepest part of the world's oceans. It reaches a maximum-known depth of about 11,033 meters (6.78 mi) at the Challenger Deep, a small slot-shaped valley in its floor, at its southern end.
Click to learn about the Mariana Trench National Monument
The Bougainville Trench is a depression in the floor of the Pacific Ocean at a depth of 8,006 meters between New Guinea and the Solomon Islands.
The Tonga Trench extends north-northeast from the Kermadec Islands off of New Zealand and is the second deepest trench at an estimated maximum depth of 10,882 m (or 35,702 ft; 6.76 mi) at its deepest point, known as the Horizon Deep.
The Kermadec Trench, 120 km off the coast of New Zealand, is the fifth deepest trench in the world with a maximum depth of 10,047 m (32,963 ft, 6.24 mi). At its southernmost point, cold Antarctic water spills into the trenches in the form of the Lower Circumpolar Deep Water mass (LCDW), making this trench one of the coldest in the world.
The Middle America Trench has a maximum recorded depth of 6,662 meters and is continuous at depths greater than 4400 m for 1260 miles, except off Manzanillo, Mexico, where submarine mountains lie in the trench. It is deeper than 5500 m for 380 miles as the Guatemala Deep.
The Java Trench (also known as the Sunda Trench) is 2,600 kilometers (8,500,000 ft) in length and has a maximum depth of 7,455 m (24,460 ft; 4.63 mi). It lies about 300 km off the coasts of Java and Sumatra and forms the boundary between Indo-Australian Plate and Eurasian plate.
The Cayman Trench in the Caribbean Sea has a maximum depth of 7686 m (25,238 ft; 4.78 mi), is1700 km long and greater than 100 km wide. It extends from the Gulf of Honduras to the Gulf of Gonave in Hispaniola and the eastern end of the trench?s floor is dominated by three deeps.
The Peru-Chile Trench (also knowns as the Atacama Trench), is located in the eastern Pacific Ocean, about 160 kilometers (100 mi) off the coast of Peru and Chile. It has a maximum depth of 8,065 meters (26,456 ft; 5.01 mi) below sea level in Richards Deep and is approximately 5,900 kilometers (3,666 mi) long.
The Puerto Rico Trench is located immediately North of the Island of Puerto Rico in the Atlantic Ocean. The trench is 800 kilometers (497 mi) long and has a maximum depth of 8,605 m (28,232 ft, 5.35 mi.) at Milwaukee Deep, which is the deepest point in the Atlantic Ocean.
The South Sandwich Trench is a deep trench in the South Atlantic Ocean lying 100 km to the east of the South Sandwich Islands. The trench is 965 km long and has a maximum depth of 8,428 meters (27,651 ft, 5.24 mi) below sea level, at the Meteor Deep, making it the deepest trench in the Southern Atlantic Ocean and the second deepest in the Atlantic Ocean, after the Puerto Rico Trench.
The hadal zone, comprised primarily of deep ocean trenches and troughs, represents the deepest marine habitat on Earth (6000 to 11,000 meters or 3.7 to 6.8 miles), accounting for the deepest 45% of the global ocean. Far from being devoid of life as originally perceived in the 1800s, more than 400 species are known to live in the 21 trenches around the world.
Animation describing the ROV/AUV vehicle, Nereus. More videos »