If your surface isn't working, then that alvioli can't or alvilis can't open or close. So if the surface is damaged, you can't breath. When water enters your lungs, it actually passes very easily from your lungs into your blood stream. The concentration of water in your blood becomes overrun with water to where you end up a i saw, apparently, one world war two study found that people's blood, or animal's blood, within three minutes, had an equal part of water and blood or whatever.