The sun is hot, the hair on my head burning under it’s relentless blaze. Slowly, as I wake, I begin to become aware of my body. I am lying face down on something, my hands strewn above me as though for help. There is water lapping at my legs, and as I realize this I also become aware of a burning, urgent thirst in my throat. The thing I am lying on is a wet, shifting, almost taut surface. My fingers reach out to feel it, and I recognize with a jolt that it is sand, wet and moveable beneath me.