Canon Powershot S80

Buy the Canon WP-DC1 Waterproof Case

The S80 has an extra million pixels and a few new features including the latest DIGIC II processor.
It is smaller and lighter than the S70, although it has much larger (2..5″) wide viewing angle LCD monitor, a control wheel/4-way controller, XGA video capture (15 fps), USB 2.0 High-speed and SD/MMC storage. The RAW capture has been dropped in the S80.

There is an Underwater Housing for up to 40 metres (132 feet) – the WP-DC1 or the Ikelite #6140.08.