Upside down in warm water where you are only wearing a bathing-suit the feeling of the bubbles rushing over your body is one of the more interesting sensations I have experienced.
@kylechristo4 No shit. The light coming from the "floor" of the lake was the first giveaway for me.
@sidwasout Humans float in water... not that hard to walk on a sheet of ice at the top of the lake. Much harder to walk on the lake floor.