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The abyssal zone or abyssopelagic zone is a layer of the pelagic zone of the ocean. ... Commonly, animals in the abyssal zone are bioluminescent, ...
The abyssal zone remains in perpetual darkness at a depth of 4,000 to 6,000 metres (13,000 to 20,000 ft). [23] The only organisms that inhabit this zone are chemotrophs and predators that can withstand immense pressures, sometimes as high as 76 megapascals (750 atm; 11,000 psi).
In zoology, deep-sea gigantism or abyssal gigantism is the tendency for species of deep-sea dwelling animals to be larger than their shallower-water relatives across a large taxonomic range. Proposed explanations for this type of gigantism include necessary adaptation to colder temperature, food scarcity, reduced predation pressure and ...
Toggle Marine animals subsection. 2.1 Fish. 2.2 Invertebrates. 3 Freshwater animals. 4 Fungi. 5 Bacteria. 6 Other microorganisms. 7 References. Toggle the table of ...
The epipelagic zone (0–200 metres (0–656 ft) deep) is the area where light penetrates the water and photosynthesis occurs. ... which led to an increase in abyssal ...
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]
The abyssal grenadier, Coryphaenoides armatus, is an abyssal fish of the genus Coryphaenoides, found in all the world's oceans, at depths between 800 and 4,000 metres (2,600 and 13,100 ft). Its adult length is 20 to 40 centimetres (8 to 16 in), although Fishbase [ 2 ] gives lengths up to 1 metre (3 ft 3 in).
Xenophyophorea / ˌ z ɛ n ə ˌ f aɪ ə ˈ f oʊ r iː ə / is a clade of foraminiferans.Xenophyophores are multinucleate unicellular organisms found on the ocean floor throughout the world's oceans, at depths of 500 to 10,600 metres (1,600 to 34,800 ft).