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![Christmas tree worms (Spirobranchus giganteus) at East Flower Garden Bank sanc0447.jpg Christmas tree worms (Spirobranchus giganteus) at East Flower Garden Bank](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_sanc0447.jpg?itok=SQIvv-2W)
Description
Christmas tree worms (Spirobranchus giganteus) at East Flower Garden Bank.Each pair of of colorful tree-like appendages are the gills of one animal. Itsbody, up to a foot long, resides in a tube encased within the coral boulder. (Image credit: NOAA/NOS/NMS/FGBNMS; National Marine Sanctuaries Media Library | G.P. Schmahl)