We lent a Sony A5000 to our friend Bo Mancao for a couple of days... no instructions, just hey, here is a camera/housing, go shoot it! Bo came back with a lot of great shots from the reefs and muck of Anilao, Philippines. Here are a few to check out:
For anyone considering getting compact camera for underwater, do also take a look at the A5000. For about the same price, you get a super capable camera and lens. The lens is a great starting point for u/w photography, and if you don't want to change lenses, it will take you a long way. But, if you decide to add more lenses to your kit, the A5000 offers many choices that are great for underwater, like the 16mm, 16mm + fisheye, the 10-18mm wide angle zoom, the superb Zeiss 12mm, and the newly released Zeiss 50mm macro.