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Title
The bright and colourful world of Christmas tree worms #163803324
Description
Christmas tree worms begin life by anchoring themselves on coral and building sand-tube homes as the coral grows around them. They unfurl their colorful, multipurpose gills into the ocean currents to extract oxygen and to filter plankton for food. The gills have tiny hairlike cilia that channel the food into the wormââ¬â¢s mouth.