Spatangus purpureus (purple hedgehog)
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Habitat: | Soft soil/sea grass meadow |
| Occurrence: | At depths up to over 900 m |
| Size: | Up to 12 cm |
| Appearance: | Flattened, purple, spines fur-like |
| Behaviour: | Detritus eater, grazer Lives mainly buried |