The Mariana Trench is the deepest part of the world's oceans. It is situated in the western Pacific Ocean, to the east of the Mariana Islands. It is rather prolonged: with the length of 1,580 miles, it has an average width of only 43 miles. But the most curious characteristic is, of course, its depth, which reaches a maximum of 6,8 miles. Despite the tough conditions of the very depths of the trench, it's home to numerous singular creatures and unique flora.