Deep underwater 10,000 meters, in the deepest part of the ocean, the Marianas Trench, water pressure is hard to imagine
The water in the Marianas Trench is crystal clear, but the magic is that as long as more than 100 meters below the seafloor, vision will be weakened can not see what the bottom of the sea looks like, vision is extremely limited, and there was a hair over the explorer set a record of - 113 meters. Why say below 100 meters vision is still blurred it, the reason is the role of the human's magnetic field, as long as within a certain depth, humans began to hallucinate, began to lose their way, for divers, down to the bottom of the sea must have contrast things to distinguish the direction.
