People into fish photography are evidently willing to go to drastic measures. Following the Olympus OM-D underwater housing that's more expensive than the camera, here's a waterproof iPhone case that essentially removes all non-photography functions. TAT7's $84.95 iPhone Scuba Case is rated to depths of 30 meters (100 feet) and has three mechanical buttons to fire the camera shutter, switch between video and still images, and access the iPhone's home button. There's no other way to interact with your phone once the case is on, so you'll have to set up your camera app before diving in — and make sure you don't press the home button once you're beneath the waves. TAT7 says you'll be able to access voice control and Siri through the case, but you should probably think twice before sacrificing photo-taking functionality to search for pizza restaurants through a snorkel.