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A Brilliant Blue Christmas Tree Worm, National Park Of American Samoa

A bright blue Christmas Tree worm growing from a cream-colored coral reef in the National Park of American Samoa
National Park Service
Monday, December 26, 2022

Named for its appearance, the Christmas Tree worm is a marine worm that lives on coral reefs. These worms are not very large - maybe a little less than two inches - and come in all sorts of colors. You might even see one while snorkeling the coral reefs of the National Park of American Samoa.

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