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The hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches. The hadal zone ranges from around 6 to 11 km (3.7 to 6.8 mi; 20,000 to 36,000 ft) below sea level , and exists in long, narrow, topographic V-shaped depressions.
The hadal zone (named after Hades, the Greek god of the underworld) is a zone designated for the deepest trenches in the world, reaching depths of below 6,000 metres (20,000 ft). The deepest point in the hadal zone is the Marianas Trench, which descends to 10,911 metres (35,797 ft) and has a pressure of 110 megapascals (1,100 atm; 16,000 psi).
In general, the snailfish (notably genus Pseudoliparis) is the most common and dominant family in the hadal zone. [ 4 ] Pseudoliparis belyaevi is a marine and deep-sea species which inhabits depths exceeding 6,000 meters that was described from a single specimen from 6380–7587 m in the Japan Trench. [ 9 ]
Pseudoliparis amblystomopsis, or the hadal snailfish, is a species of snailfish from the hadal zone of the Northwest Pacific Ocean, [1] including the Kuril–Kamchatka and Japan Trenches. [ 2 ] In October 2008, a team from British and Japanese institutes discovered a shoal of Pseudoliparis amblystomopsis at a depth of about 7,700 m (25,300 ft ...
Pseudoliparis swirei, the Mariana snailfish or Mariana hadal snailfish, is a species of snailfish found at hadal depths in the Mariana Trench in the western Pacific ...
Snailfish habitats vary widely. They are found in oceans worldwide, ranging from shallow intertidal zones to depths of more than 8,300 m (27,200 ft) in the hadal zone. This is a wider depth range than any other family of fish. [14] They are strictly found in cold waters, meaning that species of tropical and subtropical regions strictly are ...
Hadal zone microbial communities are the groups of microorganisms which reside within hadal zones, which consist of many individual deep oceanic trenches found around the world. [ 1 ] The environmental conditions of the trench environments select for the microbe communities.
They are found in deep waters and C. yaquinae, recorded to 7,012 m (23,005 ft), is the only member in the family known from the hadal zone. [ 4 ] The generic name means "similar to Coryphaena ".