English: Red sea urchin (Strongylocentrotus franciscanus or Mesocentrotus franciscanus) - sold as a California Sea Urchin at a seafood market/restaurant at Redondo Beach Pier & King Harbor Marina in Redondo Beach, California, U.S.A. It had been alive in a water tank until a few moments ago, and had just been processed for eating; the spines were still moving when this photo was taken. For size references, see the disposable dish (approximately 9 inches in diameter) and the two soup spoons. The newspaper underneath (another size reference) is the Asahi Shimbun (most likely an international satellite edition), dated January 27, 2014, provided free of charge as disposable table cloths by the harbor's fish market.