Challenger Deep and the Mariana Trench

Located in an arch sweeping to the east and south of the Marina Islands and Guam is the deepest part of the ocean, the Mariana Trench. Running over 2,500 kilometers or 1,200 miles, the very deepest part of the trench is known as Challenger Deep. At the very bottom of the sea, there is no light, temperatures are almost freezing, and the pressure is enough to crush almost anything that might make it down there. It is so inhospitable that the number of people who have ever been there is about the number who have walk...