As Perlmutter snapped photos, I swam, aimlessly and nakedly, feeling every current and swirl lick the skin on my forearms, belly, thighs. I swam in circles, I swam north to south and back again; I tried to touch the bottom, but I didn't stay down long. When I would surface, my face would break through probing tongues of wetness, and for a split second even the warm air seemed cool. I was unaware, carefree, weightless.