I'm sharing a photo of my "levitating" hairy pincushion urchin, and wondering if anyone has an urchin that does this? I had a tuxedo urchin for years and never saw him in any position other than his bottom side against the rock or glass. I got this one just under a month ago, and he has been entertaining me with his (her?) acrobatics by sticking his side, instead of his bottom, onto the glass and just hanging there. He's also very adept at straddling across wide gaps to move from rock to glass and back. I never thought a sea urchin could be so entertaining.