Speaking of deep-sea phenomenon, check out this video of a Styrofoam cup being crushed by deep-sea pressure as it is being lowered by a robotic submarine. According to the video description, the surface of Earth has an atmospheric pressure of about 14.7 pounds per square inch which allows the Styrofoam cup to stand about 4 inches tall.
But at 3000 feet under water, the pressure becomes almost 100 times that of the surface of the earth and the cup shrinks to about half the size. This video is obviously sped up and actual shrinking time may be a lot longer than 24 seconds.
