The prostomium or head is a blunt cone with a row of 4 to 8 large black eyes on either side.

[3] Cirratulus cirratus is found along the coasts of north west Europe and also in the south Atlantic Ocean.

It mostly occurs living in burrows on the lower shore in mud or muddy sand, often underneath or between rocks.

[2] Cirratulus cirratus is a filter feeder, catching particles floating past with its tentacles and conveying them to its mouth.

[5] Asexual reproduction by means of clones growing from the posterior of the worm have been recorded, but the taxonomic status of Cirratulus is under constant review and this report may refer to a different species.