The Challenger Deep is the deepest surveyed point in the oceans, with a depth of approximately 36,000 feet (11,000 meters). It is located at the southern end of the Mariana Trench near the Mariana Islands group. The Challenger Deep is a relatively small slot-shaped depression in the bottom of a considerably larger crescent-shaped trench, which itself is an unusually deep feature in the ocean floor.

The most recent (1 June 2009) sonar mapping of the Challenger Deep by the Simrad EM120 sonar multibeam bathymetry system for deep water 900 – 33,000 ft mapping aboard the RV Kilo Moana, has indicated a spot with a depth of 10,971 m (35,994 ft) (6.82 miles depth). The sonar system uses phase and amplitude bottom detection, with an accuracy of better than 0.2% of water depth (this is an error of about 22 meters at this depth).

Explorer and filmmaker James Cameron became the first solo explorer to reach the bottom of the Mariana Trench on March 25, 2012

Only three descents have ever been achieved prior to James Cameron’s divet; The first was a manned descent by Trieste in 1960. This was followed by the unmanned ROVs Kaikō in 1995 and Nereus in 2009. These expeditions have measured very similar depths of 10,902 to 10,916 meters.

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  • alissa cohan

    seriously I think you have to be crazy to jump into this hole of water, it’s like the black hole of the ocean. I mean how can people seriously do that? SCARY!!!! INSANE!!!

    3 years, 6 months ago

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