Bodies have a natural tendency to float. When they are alive. After the lungs fill with water, the body loses its buoyancy and sinks to the ocean floor. It lies there for a while, perhaps twenty-four hours. Perhaps forty-eight. But while the body dies, things inside it live on. Little microbes, bacterium. Symbiotic organisms. They're in you, right now. They keep you alive, you keep them alive. They don't notice at first that their home has died around them, is now their watery tomb, and they keep on carrying out their little tasks, digesting, processing, respiring. Living. They continue to produce gas, swelling the belly. Eventually, the body's buoyancy is restored by all these unreleased gases, and it floats back to the surface of the water. A body's head, arms, legs, only really go one way, forward. So a body will always float face-down, after rising. By this stage the skin has absorbed a massive amount of salt water, has swelled and wrinkled, like yours toes do when you've stayed too long in the bath. It's been bleached by the sodium, all colour removed, stained white. It some cases it sloughs off completely under the weight. Little fish have nibbled on the extremities during the body's long sleep under the sea. It's likely that the toes, fingers, lips, ears, eyes, have been either severely damaged, or completely stripped to the bone.