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Location of Point Nemo in relation to three closest coastline points. The oceanic pole of inaccessibility, also known as Point Nemo, is located at roughly 21] and is the place in the ocean that is farthest from land.
The point on the ocean surface farthest below sea level is located in the Indian Ocean, about 1,200 km (750 mi) southwest of India, the Indian Ocean Geoid Low, about 106 m (348 ft) below the global mean sea level.
The deepest point of the trench is more than 2 km (1.2 mi) farther from sea level than the peak of Mount Everest. [a] At the bottom of the trench, the water column above exerts a pressure of 1,086 bar (15,750 psi), more than 1,071 times the standard atmospheric pressure at sea level. At this pressure, the density of water is increased by 4.96%.
South Pacific Ocean: sea level 966 m 3,169 ft ... The summit of Chimborazo is the highest point of Ecuador and the farthest point from the center of the Earth.
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]
Furthest point from the centre of the earth: Thornton Peak, Queensland (6,377.866 kilometres) [5] Tallest Mountain, as measured from ocean floor: Mount Hamilton, Macquarie Island (5,000 + metres) [5] Including Australian Antarctic Territory: Dome A (4,093 metres) [6]
However, if the border between east and west is defined by the 180th meridian, the westernmost point is the West Point of Amatignak Island, as Attu Island is in the Eastern Hemisphere Easternmost point — Nordostrundingen , Greenland 81°26′25″N 11°29′22″W / 81.44028°N 11.48944°W / 81.44028; -11.48944 ( Nordostrundingen
Sonar mapping of the Challenger Deep by the DSSV Pressure Drop employing a Kongsberg SIMRAD EM124 multibeam echosounder system (26 April – 4 May 2019). The Challenger Deep is a relatively small slot-shaped depression in the bottom of a considerably larger crescent-shaped oceanic trench, which itself is an unusually deep feature in the ocean floor.