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| Quite a few colorful Christmas Tree Worms live in the corals. Their crowns are actually specialized mouth appendages of the worms. If you get to close or wave your hand over them, the crowns will retract and disappear in the blink of an eye. |
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| Quite a few colorful Christmas Tree Worms live in the corals. Their crowns are actually specialized mouth appendages of the worms. If you get to close or wave your hand over them, the crowns will retract and disappear in the blink of an eye. |
