Merry Christmas and Happy New Year! 'Tis the season for some festive animals, and of course we all think about worms when we're looking to get into the holiday spirit. For this holiday special, we're talking all about the Christmas Tree Worm, a fun little polychaete worm in the coral reefs. How do they get their name? How old do they get? Are they festive? Tune in to find out!