| Aspect: | Horn bell-shaped array of radioles, but with a deep u-shaped distorsion, spreading from a thin and often concealed tube. Feathers are usually banded white over purple or brown. CAUTION: not to be confused with the Horseshoe Worm, which is a phoronida - a totally different phylum. This is a Star Horseshoe Worm. | 
| Population: | Not abundant. | 
| Notable feature: | - | 
| Environment: | Usually hidden under ledges or in recesses. | 
| Behaviour: | Immediately retracts if appoached too closely or too fast. |