I love this thread and wanted to contribute. I haven't gotten into "wildlife" photogoraphy yet but in the off season I am an avid diver and have taken to underwater photography very well. So I thought I would share one of my recent shots that I thought fit this thread very well. The foreground is a very nice shot of an Opalescent Nudibranch with the silhoutte of a Kelp Greenling in the background.
-Mathue