Question about strobes - do I need them for snorkeling? My assumption was they are only really necessary for diving - for snorkeling there is enough light from above the water.
If you are interested in nothing but snorkeling, I have had good luck with my Sony TX20 without a housing at all. Just make sure that you clean and oil the orings before you go and NEVER take the camera to the beach as a grain of sand will kill it. Unfortunately, this is true with any underwater camera. It was definitely nerve wracking the first time I tried it but even free diving ~10 feet I didn't have any issues and the camera has a built in red filter that helps if the sun is behind a cloud. Biggest problem is that the touch screen doesn't work under water.
Stewart - All great advice and love the clown fish pics!