Practical Boat Owner has a four-way roundup of low-end water resistant cameras, including the Pentax Optio 22WR, Casio GV-20, Sony Cybershot DSC-U60, and the Ricoh Capillo 300G. If you’ve already got a nice digital camera you’d like to take underwater (or at least be able to accidentally drop into the drink without worrying about it being ruined), check and see if someone makes a waterproof housing for your model. Many manufacturers (Canon, for instance) actually sell housings for their cameras through their website.
