Description: Deep Sea Survey and Mapping with the Teledyne Gavia SeaRaptor AUV, Deep-sea surveys of proposed wind-farm site off the California coast, How Close Are We to Completely Mapping the Ocean?, Mariana Trench: Record-breaking journey to the bottom of the ocean - BBC News
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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 ocea
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) KaikÅ 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
A new robot that surveys the deep sea, collecting data autonomously, is providing a boost to one of MBARI’s longest running research projects. The Midwater Time-Series Project consists of video surveys of animals in the upper kilometer of the water column in Monterey Bay. Trained biologists review the video footage, identifying and documenting every animal seen. The resulting data can be analyzed to determine what species live in the midwater region, adding to our understanding of life in the deep sea, and