Slate Pencil Urchin
| Name: | Slate Pencil Urchin |
| Scientific Name: | Eucidaris tribuloides |
| Family: | Sea Urchins |
| Scientific Family: | Cidaridae |
| Source: | WoRMS AphiaID 396741 |
| Size: | up to 2 in. |
| Depth Range: | Various depths (0 – 130 ft.) |
| Sightings: | Seen sometimes |
This Urchin has thick, blunt spines with reddish and white banding, often covered with debris. It also features short, white secondary spines.
The Slate Pencil Urchin anchors itself into crevices during the day.