GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Christmas tree worms (Spirobranchus giganteus) on Porites sp. coral. These colourful polychaete worms are found in tropical regions throughout the world. They live in tubes attached to coral or rock and extend feathery radioles into the water to trap passing food particles. Photographed in the Andaman Sea, Thailand.
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