Order
Common name: Sea Urchins
Scientific name: Diadematoida
Diadematoida is an order of sea urchins known for their long, thin spines that can be quite sharp and venomous in some species. Members of this order, such as the genus Diadema, are important for their role in controlling algal growth on reefs. They are generally nocturnal and can be sensitive to water quality, requiring stable conditions. Hobbyists should handle them with care due to their spines and consider their potential to reshape the reef scape by grazing on algae.
- Common name: Pale spine fire urchinScientific name: Astropyga magnifica
- Common name: Blue-spotted UrchinScientific name: Astropyga radiata
- Common name: long-spined urchinScientific name: Centrostephanus longispinus
- Common name: Long-spined Sea UrchinScientific name: Centrostephanus rodgersii
- Common name: long-spined sea urchinScientific name: Diadema antillarum
- Common name: Sea urchinScientific name: Diadema savignyi
- Common name: black longspine urchinScientific name: Diadema setosum
- Common name: banded sea urchinScientific name: Echinothrix calamaris
- Common name: Diadema urchinScientific name: Echinothrix diadema