Spirograph
Noms alternatifs : Mediterranean fanworm, feather duster worm, European fan worm, pencil worm
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The spirograph is a species of marine polychaete worms that grows to a total length of 9 to 40 cm. These worms have stiff, sandy tubes formed from hardened mucus secreted by the worm which protrude from the sand, as well as a two-layered crown of feeding tentacles which can be retracted into the tube.
Their colours varies but it is usually orange, purple and white or, occasionally, a uniform pale grey.