I agree that maybe the best thing to do though is considering going down with a film body. Why risk a 1,000 or 2,000 - or more - dollar camera? It seems to me that film is the better medium in this area.
I have done diving in the past but never with a camera. I would imagine that most people do not go too far below 25 or 30 feet down.
TOLady, how far down do you normally go when you dive with the camera? Unless you are going down with some decent lights, I would imagine that it starts to get dark fairly quickly. I know that when I used to clam dig that it was nearly impossible to see and I was not much farther down than that.
Lou