Nothing really, it doesn't happen in water, the problem is when you get out it might occur and you don't want that to happen, if you really wanted to go swimming you could wear a tampon which you put up your vagina and blood goes into there.
You float.
they swim
You die
What happens is they teach you how to swim.
They swim
first off, it will get wet
Then the fish would swim away.
you have a good time. :D
The deeper you swim, the greater pressure becomes because there is more water above you pressing down.
Kids
The alkali in NaOH would burn your skin.
They Will die