Very cool experience on the Manthiri dive boat in Maldives, October 2009. The Backscatter/UnderExposures group put this trip together, and we all had an amazing experience with schools of Manta Rays, and Whale Sharks.
I also took some HD video of the Maldives trip, that is a compilation of stills and video. This can be found at: http://vimeo.com/30363583