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Sonar mapping of the Challenger Deep by the DSSV Pressure Drop employing a Kongsberg SIMRAD EM124 multibeam echosounder system (26 April–4 May 2019). Challenger Deep (CD) is the deepest known point in the Earth's seabed hydrosphere, a slot-shaped valley in the floor of Mariana Trench, with depths exceeding 10,900 meters. [1]
One-celled organisms called monothalamea have been found in the trench at a record depth of 10.6 km (35,000 ft; 6.6 mi) below the sea surface by researchers from the Scripps Institution of Oceanography. [6] Data has also suggested that microbial life forms thrive within the trench. [7] [8]
The study concludes that with the best of 2010 multibeam echosounder technologies after the analysis a depth uncertainty of ±25 m (82 ft) (95% confidence level) on 9 degrees of freedom and a positional uncertainty of ±20 to 25 m (66 to 82 ft) remain and the location of the deepest depth recorded in the 2010 mapping is 10,984 m (36,037 ft) at
The theoretical maximum depth for fish is at about 8,000–8,500 m (26,200–27,900 ft), beyond which they would become hyperosmotic. [ 22 ] [ 23 ] [ 24 ] Invertebrates such as sea cucumbers , some of which potentially could be mistaken for flatfish, have been confirmed at depths of 10,000 m (33,000 ft) and more.
Because of the high pressure, the depth to which a diver can descend without special equipment is limited. The deepest recorded descent made by a freediver is 253 m (830 ft) as of 2012. [22] The scuba record is 318 m (1,043 ft) as of June 2005, [23] and 534 metres (1,752 ft) on surface supply on the Comex Hydra 8 experimental dives in 1988. [24]
The fish spotted by oceangoers on August 10 was 12 feet long, according to the institution. The fish had already died at the time of the discovery, and was found near the shores of La Jolla Cove.
They are often referred to as "doomsday fish" because of their mythical reputation as earthquake or natural disaster predictions. In the months preceding the 2011 earthquake, 20 oarfish were ...
This is possibly the depth record for a fish caught on the seafloor. [ 2 ] [ 6 ] Abyssobrotula galatheae has generally been recognized as the record-holder based on one caught at the seafloor at 8,370 m (27,460 ft), but it might have been caught with a non-closing net (a net that is open on the way up and down into the deep) and therefore was ...