Florent's Guide To The Hawaiian, South Pacific and

Indo-Pacific Reefs

Black Longspine Urchin
Diadema setosum
Black Longspine Urchin
Category: Sea Urchins
Scientific Name: Diadema setosum
Size: Up to 3 in. (8 cm)  
Depth: 3-200 ft. (1-60 m)
Distribution: Indo-Pacific, Australia, Red Sea
Echinodermata (Phylum)
└Echinozoa (Subphylum)
 └Echinoidea (Class)
  └Euechinoidea (Subclass)
   └Diadematoida (Order)
    └Diadematidae (Family)
     └Diadema (Genus)
      └D. setosum (Species)
WoRMS ID: 213372🔗
iNaturalist ID: 199812🔗

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© 2026 Florent Charpin