There are a pair of large chaetae (bristles) on the under side of the body just posterior to the proboscis and the genital groove is obscure.

Its range includes the Kattegat, the Skagerrak, the western coast of Scotland and the Irish Sea.

Immediately below the entrance is a circular constriction with smooth walls, but beyond this the tunnel becomes wider and gradually becomes more horizontal.

Other animals are often found living symbiotically in the burrow, including polychaete worms and bivalve molluscs.

Several species of goby may also live near the entrance and made their own modifications to the burrow, as also does the crustacean Jaxea nocturna.