Goniocidaris impressa

Goniocidaris impressa

Size: 4 cm

Distribution: SA gulf and coastal waters east of Port Lincoln

Habitat: Rubble, rocky, or shellgrit sea floor

Depth: Subtidal to 10+ metres

This pencil urchin has thick pink or red spines that are usually heavily encrusted. Living in rocky crevices and under ledges, it has a similar appearance to Phyllacanthus, which has a bright red test, and Goniocidaris tubaria, which has less numerous secondary spinelets, and often has thorny, branching primary spines.