DPReview has published their reviews of 6 waterproof digital cameras: Panasonic Lumix DMC-TS3, Sony Cyber-shot TX10, Olympus Tough TG-810, Pentax Optio WG-1 GPS, Ricoh PX and Fujifilm FinePix XP30.
To find out which camera came out on top, read the Group test: Waterproof Compact Cameras @ DPReview.