Mariana trench depth

The Mariana trench has a maximum depth of 10,971 m (35,994 feet) below sea level, called Challenger Deep. It is located east of the Mariana Islands at 11°21`N, 142°12`E, near Guam. Mariana Trench was discovered in 1872. First they reached the Swiss Jacques Piccard and Don Walsh from America in 1960. Mariana Trench was formed at the point where it meets the bottom of the Pacific and Philippine tectonic plates. Its deepest parts are formed before 6-9 000 000 years. Mariana Trench is 23% deeper than it is Mount Everest high.

Mariana Trench is not only the deepest point of the Pacific Ocean, but the deepest point in the world. Data on its depth constantly vary, but the last say as its depth 12 111 feet below sea level.
 At the bottom of the Mariana trench pressure is more than a thousand times greater than standard atmospheric pressure at sea level. However, that living beings can adapt to such pressures, Japanese scientists have proven that at 11 km depth reveal the microscopic organisms.
The origin of this huge underwater Valley is the result of movement of lithosphere plate.
Microscopic single-celled organisms, including many unknown, were discovered in the deepest parts of the Pacific Ocean at 10 896 feet deep, according to Japanese scientists. These organisms are found in the piece sinks of sediment from the Challenger southwest of the island of Guam, Mariana Trench in the Pacific. These organisms probably can survive by absorbing particulate organic matter dropped from the surface or substance that is dissolved in salt water.
Deep trenches, such as the Japan Trench, the Izu-Ogasawara Trench, the Mariana Trench, the Yap Trench, the Palau Trench, the Philippine Trench, and the Nansei- Shoto (Ryukyu) Trench are present in the western North Pacific Ocean.