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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.
Hadal zone water column bacterial diversity is notably unique as compared to other ocean locations such as the abyssopelagic zone, with depth being a strong determinant in community composition. [25] Some of the most common bacterial taxa in the hadal aquatic environment are Bacteroidetes , Proteobacteria , Gammaproteobacteria ...
The epipelagic zone, otherwise known as the sunlit zone or the euphotic zone, goes to a depth of about 200 meters (656 feet). It is the depth of water to which sunlight is able to penetrate. Although it is only 2 to 3 percent of the entire ocean, the epipelagic zone is home to a massive number of organisms. [3]
Cusk-eels lives in temperate and tropical oceans throughout the world. They live close to the sea bottom, ranging from shallow water to the hadal zone.One species, Abyssobrotula galatheae, was recorded at the bottom of the Puerto Rico Trench, making it the deepest recorded fish at 8,370 m (27,460 ft).
One page that is dedicated to celebrating photography from history is Old-Time Photos on Facebook. This account shares digitized versions of photos from the late 1800s all the way up to the 1980s.
Organisms in the abyssal zone rely on the natural processes of higher ocean layers. When animals from higher ocean levels die, their carcasses occasionally drift down to the abyssal zone, where organisms in the deep can feed on them. When a whale carcass falls down to the abyssal zone, this is called a whale fall. The carcass of the whale can ...
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In oceanography, a halocline (from Greek hals, halos 'salt' and klinein 'to slope') is a cline, a subtype of chemocline caused by a strong, vertical salinity gradient within a body of water. [1]