Search results
Results from the WOW.Com Content Network
Historically, the hadal zone was not recognized as distinct from the abyssal zone, although the deepest sections were sometimes called "ultra-abyssal".During the early 1950s, the Danish Galathea II and Soviet Vityaz expeditions separately discovered a distinct shift in the life at depths of 6,000–7,000 m (20,000–23,000 ft) not recognized by the broad definition of the abyssal zone.
There are over 300 species of Snailfish. While many live in shallow waters (tidepools) and river estuaries, some have adapted to the cold water, as well as the high-pressure depths of the world's deepest trenches over 7,000m. [8] In general, the snailfish (notably genus Pseudoliparis) is the most common and dominant family in the hadal zone. [4]
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 ...
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).
The abyssal zone extends from 4,000 metres (13,123 ft) to 6,000 metres (19,685 ft) or 6,500 metres (21,325 ft), depending on the authority. The hadal zone refers to the greatest depths, deeper than the abyssal zone. Some twilight occurs in the mesopelagic zone, but creatures below the mesopelagic must be able to live in complete darkness. [5] [6]
Most of the small eukaryotic biomass in the hadal zone is composed of nematodes and foraminiferans. [17] The eukaryotes found in this area however have proven difficult to study because of an inability to recover live samples, undersampling of the hadal zone, and low population density. [17]
Zach Hadel (/ ˈ h eɪ d ə l / HAY-dəl; [4]), known by his pseudonym psychicpebbles, is an American YouTuber, animator, writer, director, and voice actor.He and Michael Cusack are the co-creators and co-stars of the Adult Swim animated series Smiling Friends.
The Hadal-Lander is seen descending into a CG model of a subduction trench, alongside some footage obtained during Hades-K and Hades-M. He was a guest presenter at New Scientist Live at the ExCel London centre in September 2017 where he also joined BBC World Service's Science in Action live panel show with Roland Pease. [31]