In reply to loose overhang:
> (In reply to PaulHermes) I've used a Pentax W30 for the last few years with great success both above and below the water. The most recent trip was into the Wind Rivers Range in Wyoming. I took hundreds of photos most of which turned out quite well. For a long trip I take a charged spare battery. Pentax now have what looks like a really rugged set of cameras, the WG30 line. Check out their website for details. They come with a lanyard and 'biner attached. I think those items will have a, "not to be used for climbing" warning. One model has GPS built in. That's probably if you get lost while snorkeling. Joking aside, they do look tough.
>
> Good luck.
I had the Pentax W20 and then bought the Pentax W30. I quickly sold it as I wasn't at all happy at the video quality in comparison to the previous W20 or Panasonic Lumix TS/TL models, though it seems to be good for snorkling...