Don't struggle, for a start, you'll work your way in deeper. Just stick there, shout around, and hope someone nearby hears you. If not, you'll probably die there. Ilikedragons, I, too, find that it is hard to float in water. It is a lot easier to float on your stomach than on your back. But also, a lung full of air helps a lot. If you float on your back, and exhale, you'll probably get real close to sinking underneath entirely. So you need to breath back in rather quickly, to stay afloat.