The Mariana Trench is the deepest oceanic trench on Earth and home to the two lowest points on the planet. The crescent-shaped trench is in the Western Pacific, just east of the Mariana Islands ...

Somewhere between Hawaii and the Philippines near the small island of Guam, far below the surface of the water, sits the Mariana Trench, the deepest spot in the ocean. What’s down there?

Several people have lobbied the federal government to make the Marianas Trench Marine National Monument a marine sanctuary, including famed director James Cameron, who visited Guam in 2012.