Waterproof cameras run from $29 to well over $5000 so you have to decide how much you want to spend and how often you are going to be using it. The entry level is a cheapo little film camera of fixed focal length and built in flash and uses 35mm film. The point and shoots are good for occasional use will go far beyond their rated depth. If you wreck one by going to deep they are covered by warranty. There is nothing in the camera that tells them how deep you went. Next step up is a point and shoot with a housing. all the major manufacturers make them, just pick one you like and can afford. This is what we use for all our dives and the pictures are great for personal use etc. If your looking for continuous use and professional quality then you are going to need one of the DSLR's and a housing and set of strobes.
__________________
|