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.
At the time, the deep sea was considered a muddy, lifeless abyss, albeit one rich in cobalt, nickel and other metals potentially worth trillions of dollars ... ( Image of an ocean floor cleaning mission by U.S ... Geological Survey found last year that deep-ocean mines could provide up to 45% of all the world’s critical metal needs by 2065.
For ecologists, there’s an urgency to deep-ocean exploration ... “Even if we dropped to net-zero (carbon emissions) right now, the decline of oxygen in the deep ocean would carry on for a couple of centuries,” says Jon Copley, a deep-sea marine biologist with the University of Southampton.
The deepest known point of the world ocean lies here which was named the ‘ChallengerDeep’ (after the survey ship that discovered it) ... The entire world back then was into looking for the legendary “last bottom” of the planet, surveying every known oceanic trench.
The research vessel (RV) Investigator, operated by CSIRO, Australia's national science agency, also surveyed previously unknown deep-sea life in the IndianOcean Territories ...Deep ocean carbon drawdown not an easy climate fix ... “We have used the full ocean depth mapping capabilities ...
The research vessel (RV) Investigator, operated by CSIRO, Australia's national science agency, also surveyed previously unknown deep-sea life in the IndianOcean Territories ... We have used the full ocean depth mapping capabilities of RV Investigator to completely survey around ...
3), also surveyed previously unknown deep-sea life in the IndianOcean Territories ... "We've used the full ocean depth mapping capabilities of RV ... "This research voyage has led to many important discoveries of marine life and deep ocean terrain, and we are very proud of this work.".
Why are we seeing the patterns that we have observed on this expedition? This will enable us to understand the deep ocean in much better terms." ... The purpose is to conduct the first systematic survey of ocean life in the Maldives, from the surface to 1000 meters deep, to help inform conservation and sustainable development policies.
The rose-veiled fairy wrasse ( Cirrhilabrus finifenmaa ) is one of many species that deep-diving scientists have found in the mesophotic (or twilight) zone, which lies between the sunlit shallows and the dark, deep ocean.
... marine research activities including expanded fisheries surveys, seabed mapping, data collection to support marine spatial planning, climate change-related research, environmental monitoring, deep water surveys, and undertaking research in the AtlanticOcean with our EU partners.