red lance pencil urchin - stylocidaris affinis

affinis animals aquatic biodiversity blue cidaroida close colorful coral reef creature echinoderm echinometridae ecosystem environment exotic invert invertebrate invertebrates life marine mediterranean pencil urchin red lance saltwater scenic scuba diving sea seascape seaside seawater shellfish snorkel spines spiny star structure stylocidaris tropical tropics undersea underwater water species found bermuda caribbean gulf mexico occurs circalittoral deep sedimentary bottoms malta