When Pentax dove into the underwater point-and-shoot camera market last year with its nifty, but limited, Pentax OptioWP, I learned how much fun you could have taking underwater photos and videos. The ultracompact Olympus Stylus 720 SW builds on this notion and makes some important improvements. For example, the Stylus 720 SW is shock-resistant as well as being waterproof to a depth of 10 feet. (The Optio WP isn't shockproof at all and is waterproof only down to about 5 feet.) Those improvements make this the perfect camera for the backyard pool or even a trip to the beach.