This image captures a Christmas Tree Worm, scientifically known as Spirobranchus giganteus, in its natural habitat off the shores of Yap. Its vibrant, spiraled plumes resemble festively adorned trees, hence the fitting name. These colorful structures serve a crucial purpose, acting as both gills and feeding appendages. The worm’s plumes come in an array of hues, including reds, yellows, and blues, creating a stunning underwater display. These creatures have a unique bond with coral reefs, forming mutually beneficial relationships. The worm finds safety nestled within the coral while contributing to its health by preventing algae overgrowth.