Norbert Wu / Sea Urchin (Lytechinus variegatus) covered with coral, shells, and urchin skeleton to prevent predation, West Palm Beach, Florida

Norbert Wu / Sea Urchin (Lytechinus variegatus) covered with coral and shells to prevent predation, West Palm Beach, Florida

Tui De Roy / Two Chocolate chip seastars (Nidorellia armata) with Green sea urchin (Lytechinus variegatus) on sea floor, Galapagos Islands, Ecuador. Pacific Ocean.