I use an Olympus TG-2, which is great for underwater shots of your corals.
http://www.photographyblog.com/revie...h_tg_2_review/
And here is a discussion back when I first got it and was learning to use it.
http://www.canreef.com/vbulletin/sho...t=96625&page=3
And how to adjust my white balance for proper color with LEDs.
http://www.canreef.com/vbulletin/sho...d.php?t=101272
I really like it now. Also go into my tank journal to see more recent pics with this camera.
The only complaint I ever had was the lack of a manual focus. But then again, most point and shoot cams don't have that capability.
The TG-2 has been out for about a year now, though, and it's possible that a follow-on TG-3 may be available soon.