A leather coral (<i>Sarcophyton</i> sp.) showing its brightly fluorescent polyps. This is an octocoral, unlike the vast majority of other corals in my galleries. Each polyp has 8 tentacles - an anatomical feature that separates this group. A <a href="http://www.microworldsphotography.com/photos/i-XzSrB6S/0/O/i-XzSrB6S.png"> closer look</a> can reveal individual zooxanthellae algae inside the polyps.<br><br>Larger print sizes (24x36 inch or more) tremendously increase the impact of the image.