What is the Mariana Trench

In the Pacific Ocean, somewhere between Guam and the Philippines, lies the Marianas Trench, also known as the  Challenger Deep. At 35,814 feet below sea level, its bottom is called the Challenger Deep, The deepest point known to Earth. Only three people have ever made it to the Mariana Trench. The Navy has always been interested in undersea exploration for navigation, scientific research, education and strategic purpose. In fact, by 1958, it funded nearly 90 percent of all U.S. oceanography ventures. Because of its extreme depth, the Mariana Trench is clocked in perpetual darkness and the temperature is just a few degrees above freezing. The water pressure at the bottom of the trench is a crushing right ton per square inch or about a thousand times the standard atmospheric pressures at sea level. Pressure increases with depth. If Mount Everest were dropped into the Mariana Trench, it’s peak would still be more than a mile underwater. The Mariana Trench’s microscopic inhabitants might even shad light on the emergence of life on earth. Studying rocks from ocean trench could lend to a better understanding of the earthquakes that create the powerful and devastating tsunamis seen around the Pacific Rim, geologists say.

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