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Within the relief of the Earth, ocean trenches are depressed sectors that are under the sea, where the depth of the water is much greater. The Mariana Trench is of all of them the great unknown. It is located in the Pacific Ocean, very close to Japan. According to experts, the pit originated from a subduction process.
The Mariana Trench is more than 70 kilometers wide. It has a depth that, in its deepest area, the Challenger Abyss, reaches 11 kilometers. It is, therefore, the lowest point on Earth. The pressure experienced in this area is 1,000 times greater than that of the Earth.
This gigantic ocean pit lacks lighting. As can be seen in the image, there are hydrothermal vents at the bottom of the Marianas and, although it seems incredible, there is also life. About 200 single-celled species and dozens of species of animals unknown to man inhabit the pit. One of the most spectacular is the giant squid of the genus Architeuthis.
The most impressive images of the Mariana Trench are due to the Kaiko unmanned submarine. This vehicle collected samples located at 10,896 meters deep. Much of the organisms discovered were formed six million years ago, so it is very likely that they are remnants of prehistoric life on the planet.
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