I agree with pirate. I recently picked up a blue dot urchin (royal urchin) and it's really active and beautiful. I am also fond of serpent stars, decorator crabs and arrow crabs. Deep Sea Creations in Temecula has a "fancy" arrow crab the likes of which I've never seen before. It's top is not as long or pointed as my arrow crab and its legs have "fringe" at the joints. Very ornate. K of looks like God drew it with a calligraphy pen.