The deep sea or deep layer is the lowest layer in the ocean, existing below the thermocline and above the seabed, at a depth of 1000 fathoms (1800 m) or more. Little or no light penetrates this part of the ocean and most of the organisms that live there rely for subsistence on falling organic matter produced in the photic zone. For this reason scientists once assumed that life would be sparse in the deep ocean but virtually every probe has revealed that, on the contrary, life is abundant in the deep ocean.
In 1960 the Bathyscaphe Trieste descended to the bottom of the Mariana Trench near Guam, at 35,798 feet or 6.77 miles (10,911 meters), the deepest known spot in any ocean. If Mount Everest (8,848 metres) were submerged there, its peak would be more than a mile beneath the surface. The Trieste was retired and for a while the Japanese remote-operated vehicle (ROV) Kaikō was the only vessel capable of reaching this depth. It was lost at sea in 2003. In May and June 2009, the hybrid-ROV (HROV) Nereus returned to the Challenger Deep for a series of three dives to depths exceeding 10900 meters.
The cabinet also approved a deep ocean mission to search for resources and develop deep-sea technologies for sustainable use of ocean resources. The mission, with an expenditure of ₹4,077 crore, will help in studying ocean biology and climate change, and establish offshore stations to explore energy resources ... There will be deep sea survey.
... development of ocean climate change advisory services; technological innovations for exploration and conservation of deep-sea biodiversity; deep ocean survey and exploration; off-shore energy and fresh water from the ocean; and advanced marine station for ocean biology.
“Cabinet approves the proposal of the Ministry of Earth Sciences on 'DeepOceanMission' with a view to explore Deep Ocean for resources and develop deep-sea technologies for sustainable use of ocean resources," a government spokesperson said after the Cabinet meeting.
The cabinet also approved a deep ocean mission to search for resources and develop deep-sea technologies for sustainable use of ocean resources. The five-year mission, with an expenditure of ₹4,077 crore, will help in studying ocean biology and climate change, and establish offshore stations to explore energy resources ... There will be deep sea survey.
The Prime Minister approved six major components of the DeepOcean mission ... A deep ocean survey and exploration will also be undertaken to “explore and identify” potential sites of multi-metal hydrothermal sulphides mineralization along the Indian Ocean mid-oceanic ridges.
Five thrust areas under the DeepOceanMission are — development of technologies for deep sea mining; manned submersible; development of ocean climate change advisory services; development of technology for exploration and conservation of deep-sea biodiversity; deep ocean survey and setting up of a marine station for ocean Biology.
The key locations where the seafloor bottoms out in the Pacific, Atlantic, Indian, Arctic and Southern oceans were mapped by the Five Deeps Expedition... Roughly 80% of the global ocean floor remains to be surveyed to the modern standard delivered by the likes of the Five Deeps Expedition.
... of all five oceans ... The series about the feat, which debuted on Thursday, is ExpeditionDeepOcean ... “But it’s my intention to continue to work with the buyer, because I would love to continue to work the ship a couple of months a year to continue doing deep ocean exploration.”.
While there is no evidence of immediate damage to sea life, IOLR will continue to conduct surveys on fish and marine species in the case that this occurs, said Astrahan... “I expect to find some of the pollution in sediments and the deep sea,” Rahav predicted of the upcoming sea dives to survey the ocean floor.
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