Hadopelagic (the deep water in ocean trenches) - the name is derived from Hades, the classical Greek underworld.
The bathypelagic, abyssopelagic, and hadopelagic zones are very similar in character, and some marine biologists elide them into a single zone or consider the latter two to be the same.
Some define the hadopelagic as waters below 6000 meters, whether in a trench or not.
Pelagic zone | Topic Definition | Find the Meaning and Define the Answer of Pelagic zone(Site not responding. Last check: )
The name is derived from the greek abyss meaning bottomless (a holdover from the times when the deep ocean was believed to be bottomless).
Hadopelagic (the deep water in ocean trenches) - the name is derived from hades, the classical greek underworld.
The bathypelagic, abyssopelagic, and hadopelagic zones are very similar in character, and some marine biologists elide them into a single zone or consider the latter two to be the same.
The epipelagic zone stretches from the surface down to 200 meters and is home to the greatest biodiversity in the sea, largely because of the availability of sunlight that enables photosynthetic organisms to thrive.
The hadopelagic zone is the area of deep water in the deepest ocean trenches.
Hadopelagic is from the Greek for "Hades", or the Greek underworld.
Separated into epipelagic, mesopelagic, bathypelagic, abyssopelagic and hadopelagic subzones, areas in the pelagic zone are distinguished by their depth and the ecology of the zone.
The deepest subzone is the hadopelagic zone, a name that originates from the Greek underworld Hades and refers to the ocean water in submarine trenches.
There are only a few organisms adapted to survive in the abyssopelagic zone, a subzone located from 4,000 m to the bottom with freezing temperatures and incredible pressures.
The equilibrium would no doubt be quite different under the high pressure conditions in the deep ocean.
The resulting environmental effects on benthic life forms of the bathypelagic, abyssopelagic and hadopelagic zones are unknown.
Even though life appears to be rather sparse in the deep ocean basins, energy and chemical effects in these deep basins could have far-reaching implications.
Very few submersibles are capable of descending into this zone, so most of what we know of this realm comes from net collections.
The third zone, the hadopelagic (hado – from Hades, the mythological underworld), encompasses the waters within ocean trenches, and has been very poorly studied to date.
The midwater component of our research, both during recent cruises and in previous years, has focused on the mesopelagic zone.
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Biologists refer to species dwelling on the sea floor at any depth as benthic organisms or ‘the benthos’.
Fish are common in benthic communities in the mesopelagic and bathypelagic zones, but there are none on the deeper sea floors of the abyssopelagic and hadopelagic zones.
Energy is in scarce supply here, deriving mainly from falling food that has made it past all the waiting mouths above.
Very few submersibles are capable of descending into this zone, so most of what we know of this realm comes from net collections.
The third zone, the hadopelagic (hado – from Hades, the mythological underworld), encompasses the waters within ocean trenches, and has been very poorly studied to date.
The midwater component of our research, both during recent cruises and in previous years, has focused on the mesopelagic zone.
Descriptive of organisms that inhabit open water, as opposed to benthic.
This is sometimes divided into five separate ecological zones which are, proceeding from the surface to the bottom, the epipelagic, mesopelagic, bathypelagic, abyssopelagic and hadopelagic zones.
A research program established in 1992 to provide scientific information on pelagic fisheries to the Western Pacific Regional Fishery Management Council (WPRFMC) after the Magnuson Fishery Conservation and Management Act of 1976 was amended to include highly migratory fish.
