-- Last Updated: Mar-04-13 11:39 PM EST --
Tha AW Coolpix is a Nikon (not Canon).
That aside, my friend has one and, while it makes decent pictures and has a nice screen, his fogs-up way too much. He also has an older Pentax that flooded patially for no apparent reason. We went to all the same places and my Sony TX5 (a veeery old model by now) had no issues, knock on wood. That little camera I carry in my PFD pocket often and it has seen lots of snorkeling and rolling and white water and is still going good despite the scratched-up metal exterior...
Most waterproof cameras, somewhere in the fine print, tell to replace the seals every year to maintain waterproofness. The replacement cost is about 1/2 the camera cost if not more. Something to keep in mind as one's camera ages beyond a year or two (mine is already at near 3 years of active use and I see no issues with the seals or anything else aging)...