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en.wikipedia.org/wiki/Hadal_zone

The hadal zone (named after the realm of Hades, the underworld in Greek mythology), also known as the hadopelagic zone, is the deepest region of the ocean lying within oceanic trenches.The hadal zone is found from a depth of around 6,000 to 11,000 metres (20,000 to 36,000 ft), and exists in long but narrow topographic V-shaped depressions.

www.answers.com/Q/What_is_the_temp_in_the_hadal_zone

The temperature of the planet Mercury ranges quite a lot. Duringthe evening it is â 287 degrees Fahrenheit and during the day it is800 degrees Fahrenheit. ... No plants live in the Hadal zone ...

www.ibtimes.co.uk/hadal-zone-ten-things-you-never-knew...

Anything deeper than that is the "hadal zone". The hadal zone is largely comprised of deep trenches caused by tectonic plate subduction that drive the vast abyssal plains steeply down to depths of ...

www.weather.gov/jetstream/layers_ocean

Hadalpelagic Zone. The deepest zone of the ocean, the hadalpelagic zone extends from 19,700 feet (6,000 meters) to the very bottom at 36,070 feet (10,994 meters) in the Mariana Trench off the coast of Japan. The temperature is constant at just above freezing. The weight of all the water over head in the Mariana Trench is over 8 tons per square ...

www.untamedscience.com/biology/biomes/deep-sea-biome

They tend to be grey or black (for camouflage) and unstreamlined (for energy conservation). Many are blind, and they are thought to reproduce very slowly. Some examples of deep sea life here are the tripod fish, anglerfish and giant squid. Hadalpelagic Zone: The Hadal Zone or the Hadalpelagic zone is the layer of the deep sea below 6000 meters ...

prezi.com/.../bathypelagic-abyssopelagic-hadalpelagic-zone

In spite of the crazy pressure and temperature, creatures can still live here. Invertebrates, such as starfish and tube worms, can thrive at these depths. ECOLOGY SEA URCHIN • The water temperature is so cold that it is near freezing, and there is no light at all. • Has

www.britannica.com/science/abyssal-zone

The upper boundary between the abyssal zone and the overlying bathyal zone is conveniently defined as the depth at which the water temperature is 4° C (39° F); this depth varies between 1,000 and 3,000 m. Waters deeper than 6,000 m are treated separately as the hadal realm by ecologists.

sciencing.com/animals-plants-hadal-zone-6745348.html

The hadal zone is the deepest region in the ocean, extending from 6,000 meters to 11,000 meters below the surface. This zone does not spread across the ocean floor but exists only in the deepest ocean trenches. Because no light reaches this part of the ocean, it is impossible for plants to thrive but there are still ...

deepseamnsmith.weebly.com/climate.html

The Deep Sea Biome has a fairly stable climate within its three zones. In the first zone of the Deep Sea, the Bathypelagic Zone, light does not reach the water and the temperature can be either 5 or 6 degrees Celcius (often, temperature in this zone does not vary much). In the Abyssopelagic Zone, or the Abyssal Zone, the water is even darker and colder, keeping a fairly consistent temperature ...

en.wikipedia.org/wiki/Abyssal_plain

Some species live in the coldest ocean temperatures of the hadal zone, while others can be found in the extremely hot waters adjacent to hydrothermal vents. Within the abyssal and hadal zones, the areas around submarine hydrothermal vents and cold seeps have by far the greatest biomass and biodiversity per unit area.