My Nightmare - Number 1

I'm laying on an inflatable raft just off the beach's shore. The motion of the water relaxes me as I've never been before. The warmth of the sun shining on me drifts me off to a deep sleep eventually, and as I lay there adrift the current slightly shifts and drifts me out further slowly to sea. With a splash on my face I immediately awake to choppy water and a thunderous roar. A storm is brewing and I'm in the middle of the ocean with absolutely no sight of any shore,.. ..and if that isn't enough, I can't get out of my head the theme from JAWS.