Florent's Guide To The Hawaiian, South Pacific and

Indo-Pacific Reefs

Savignyi's Longspine Urchin
Diadema savignyi

Savignyi's Longspine Urchin - Diadema savignyi
Location: Lembeh Strait, Indonesia

Scientific Name: Diadema savignyi
Category: Sea Urchins
Size: Up to 3 in. (8 cm)  
Depth: 3-200 ft. (1-60 m)
Distribution: Indo-Pacific, Red Sea, Australia, French Polynesia


 

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© 2026 Florent Charpin