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Image of Christmas tree worms filtering plankton from the seawater
Courtesy NOAA Photo Archive
  Image 4-24
Christmas Tree Worms

Christmas tree worms are found among the reef in an almost endless variety of colors. The worm lives in a tube that it embeds in porous coral. The part of the worm we see is its feathery head, which is used to filter microscopic organisms from the passing current.

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