Blue-Black Sea Urchin
Echinothrix diadema
- Group: Urchin
- Typical depth: 1–220 m
- Max size: 20 cm
- For divers: dangerous
Two sets of spines bristle from this urchin, long black shafts and shorter ones banded with colour, and it grazes reefs at night down to about 40 metres. It eats algae and organic debris and adults sometimes nibble live hard coral, so handle it with care since the spines can pierce skin.
Taxonomy: Animalia › Echinodermata › Echinoidea › Diadematoida › Diadematidae › Echinothrix
Species data via the World Register of Marine Species (WoRMS), AphiaID 213378.
FAQ
- How deep does the Blue-Black Sea Urchin live?
- The Blue-Black Sea Urchin (Echinothrix diadema) is typically found at 1–220 m.
- Is the Blue-Black Sea Urchin dangerous to divers?
- The Blue-Black Sea Urchin can be dangerous; divers should keep their distance.
- How big does the Blue-Black Sea Urchin get?
- The Blue-Black Sea Urchin grows to about 20 cm.