Talk about tiny! Here is a very small (maybe 7mm?) Xenia shrimp on a zenia coral polyp. Taken in Anilao, philippines. I am quite taken with the play of white-on-white that the little critters that live in and among Xenia coral make. They seem very sculptural and elegant to me.
Olympus EPL-3, 45mm Leica lens, subsee +10 diopter, twin s2000 strobes.