Christ is enough. A. Two ways to handle pressure. According to Jay Kesler, there are two ways to handle pressure. One is illustrated by the bathysphere, which is a miniature submarine. It is used to explore the ocean in places so deep that the water pressure would crush a regular sub like a tin can.
Bathyspheres compensate for the pressure with a steel hull that's several inches thick.
They are small and cramped. When bathyspheres reach the ocean floor, however, they find they're not alone. When the outside lights are turned on and you look out the thick windows, you see fish. These fish cope with extreme pressure in an entirely different way. They compensate for the outside pressure through equal and opposite pressure inside themselves.