" Just what did happen to a corpse under water for four, five years, even three? the tarpaulin or canvas would rot, perhaps more than half of it would disappear; the stones would likely have fallen out, therefore, enabling the corpse to drift more easily, even rise a little, provided any flesh was left. But wasn't rising due to bloating? Tom thought of the word maceration, the flaking off in layers of the outer skin. Then what? The nibbling of fish? Or wouldn't the current have removed pieces of flesh until nothing but bones were left? The bloated period must be long past... "

― Patricia Highsmith , Ripley Under Water (Ripley, #5)