Both Olympus and Pentax have waterproof cameras that you can take diving down to 10 or 30ft, I don't recall. They are a bit pricier, but really rugged. Some can take a drop down to concrete floor from a height of a few feet. I have been tempted but have not bought one. For that ruggedness, something got to give. Like the zoom lens must be enclosed, so the zoom range is limited, and they weight more, etc...