Trimming or shaving excess body hair is a good idea also as they can get caught in it. Diving nude just might teach clumsy divers more respect for the environment and force them to better their skills. Common things like brushing up against rocks, wrecks, fire coral, coral cuts and other encounters with the environment, bad enough in normal diving, can be much worse on more sensitive areas exposed on underwater nudists. Just the fear of this happening can make divers more acutely aware of their buoyancy and other diving skills. Long ago life sprang from the sea.
Diving is humanity's way of returning to it.
Diving without attire makes us closer to the other inhabitants and more a part of this world we visit. The sea has given birth to many legends over the hundreds of years men have sailed on its surface and journeyed below it. Tales of monsters and myths have come forth. Fearsome dragons, devilfish, Scylla, Charybdis, sirens, mermaids and other legends have abounded for years. Some were real, some imagined.