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The Mariana Trench is an oceanic trench located in the western Pacific Ocean, about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench on Earth. It is crescent-shaped and measures about 2,550 km (1,580 mi) in length and 69 km (43 mi) in width.
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.
In 1960, Don Walsh and Jacques Piccard were the first two humans to reach Challenger Deep, completing that dive as a team. [4] 52 years later, James Cameron became the first person to solo dive that point. Piccard, Walsh and Cameron remained the only people to reach the Challenger Deep until 2019, when regular dives in DSV Limiting Factor began.
James Cameron, in the Deepsea Challenger vessel, dove deeper in 2012 to 10,908 meters (35,790 feet) down in the Mariana Trench in the Pacific Ocean, the world's deepest spot.
The Challenger Deep, located just outside the Trench Unit, is the deepest point in the Earth's oceans, deeper than the height of Mount Everest above sea level. It is five times longer than the Grand Canyon and includes some 78,956 square miles (204,500 km 2) of virtually unexplored underwater terrain.
The Challenger Deep is located in the Western Pacific Ocean near the island of Guam in the Mariana Trench, the deepest known part of an ocean on Earth, and the deepest known location on Earth. [5] The May 2009 dive by the Nereus achieved a depth of 10,902 metres (35,768 ft), making it the world's deepest-diving vehicle then in operation, and ...
Kelly Walsh dived 11,000m under the ocean to Challenger Deep, 60 years after his father Don Walsh made the journey. He tells Bevan Hurley he’s watched the Titan rescue in ‘horror and sadness’
The Sirena Deep, originally named the HMRG Deep, was discovered in 1997 [1] [2] by a team of scientists from Hawaii. [2] Its directly measured depth of 10,714 m (35,151 ft) is third only to the Challenger Deep and Horizon Deep , currently the deepest known directly measured places in the ocean.