Leica has a waterproof camera in their line: the Leica X-U. I recently had the chance to shoot with it for a few weeks on a trip to the Arctic. Here's my hands-on review.
Leica X-U Waterproof Camera Hands-on Test & Review
Thoughts and Field Test: Leica X-U Underwater Camera
Leica X-U Waterproof Camera Hands-on Test & Review
Review: Leica's X-U is a pricey adventure camera
Leica X-U (Typ 113) Review: Waterproof. Dustproof. Shockproof. A camera for all my adventures.
Leica X-U Review Photography Blog
Thoughts and Field Test: Leica X-U Underwater Camera
Detail review of digital camera Leica X-U (Typ 113)
Leica X-U vs Leica X (Typ 113) Detailed Comparison
Leica X-U Hands-On Review - Underwater Camera That's Built to Take A Beating - Luminous Landscape