Serpula columbiana, variously called the calcareous tubeworm, the plume worm, the fan worm, the limy tube worm and the red tube worm, is a species of segmented marine polychaete worm in the family Serpulidae. It is a cosmopolitan species that is found in most seas in the Northern Hemisphere including the Atlantic Ocean, the Pacific Ocean and the Indian Ocean.

Serpula columbiana. Retrieved November, 05 2021, from en.wikipedia.org/wiki/Serpula_columbiana.