Fan Worm

European fan worms grow to a total length of 9 to 40 cm (4 to 16 in) and are usually larger in deep water. They have stiff, sandy tubes formed from hardened mucus secreted by the worm which protrude from the sand, and a two-layered crown of feeding tentacles which can be retracted into the tube. One of the layers forms a distinct spiral. The colour of the tentacles is variable but they are usually banded in orange, purple and white