GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Blue linckia (Linckia laevigata) starfish and lyretail anthias (Pseudanthias squamipinnis, yellow) on a coral reef. Starfish, also known as sea stars, are a type of marine invertebrate known as echinoderms. They use tube-like feet on their underside to move across the seabed. They can be predators, plant-eaters or scavengers. Photographed in Bunaken National Park, Indonesia.
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