ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Basket star (Astropartus mediterraneus) climbing over a sea fan coral (Paramuricea clavata). These two species are often associated. A basket star is a specialised kind of brittle star. Its branching arms coil in a basket shape to catch plankton at night. Brittle stars are marine invertebrates that are related to starfish. They have five flexible arms radiating from a central disc-shaped body. Photographed off Levant Island, France, in the north-western Mediterranean Sea.
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