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](https://www.nationalparkstraveler.org/sites/default/files/styles/npt_square2/public/photos/potw/npsa_nps_christmas_tree_worm_1024.jpg?itok=BfnKI4HL)
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.
- By Rebecca Latson - December 26th, 2022 3:00am