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.
LFP batteries do require small amounts of manganese, a mineral found in the ocean's polymetallic nodules ... These rocks lay on the seafloor of the deep ocean and contain high concentrations of cobalt, nickel and manganese.
Organizers of the mission predicted that a fortune could be made from these dark nodules on the ocean floor ... Polymetallic nodules grow and shift about the seafloor, recording time and the ocean’s chemistry like a ship’s log.
... of diving for sunken treasure; and a joint venture of the Cook Islands government and Global Seabed Resources, a Belgian company known for developing a deep-sea “nodule collector” called Patania II.
The exhibition includes modern-day equipment for ocean exploration such as this long-range autosub ... “[The scientists on board] did a lot of stuff, including identifying 4,700 new species unknown to science from the deep ocean.
They might look like pebbles strewn across the seafloor, but to the unique animals of the ocean deep, polymetallic nodules are a crucial habitat ... The nodules were first recovered from the Pacific deep ...
Manganese nodules are found in the deep ocean.These could be an important source of valuable and relatively scarce metals ... Manganese nodules, also known as polymetallic nodules, can be found in all of Earth’s oceans.
The nodules form on the ocean floor over millions of years ... A few species use nodules to anchor themselves to the ocean floor and will lose their habitat and life without them.A deep sea creature attached to a nodule on the sea floor.
Polymetallic nodules collected by The MetalsCompany during a deep sea trial in the PacificOcean in November 2022 ... The company is looking to mine the deep sea with robotic vehicles that suck up the ...