How to Make a Shipwreck Smaller

The weight of the air is 14.7 pounds on every square inch of your body at sea level. Every 33 feet beyond that, it doubles again. The deeper you go, the more water pushes the same amount of air into a smaller and smaller space. So if we give proudfoot the benefit of the doubt and say he was a sport diver exploring at the limits of his depth, roughly 100 feet deep, we can put him in the space 3 feet by 3 feet by 6 feet.