jfa_16

Diver here - You are kind of correct. The problem with breathing compressed air at depth and surfacing rapidly as that the air in you lungs at depth is compressed under the pressure of all the water above/around you. If you hold your breath and ascend, the pressure becomes less and the air in your lungs expands. You see where this is going. The air can expand to the point that you injure your lungs due to over-expansion. The way to avoid this is to exhale as you ascend. The slower the ascent, the better. In this case, if a shark were attacking her, she could exhale and bolt to the surface and probably be ok, depending on how fast she ascended and from what depth. Divers are trained to do emergency ascents while exhaling as part of SCUBA training.

You can't jelly your dick into someone's ass?

I remember reading a quote somewhere from an astronaut about his prelaunch thoughts. He said something to the affect of “you become acutely aware that you’re strapped to the top of thousands of pounds of highly volition fuel and about a million moving parts assembled by the lowest bidder”. LOL