Florent's Guide To The

Tropical Pacific Reefs

Variable Fire Urchin
Asthenosoma varium
Variable Fire Urchin
Category: Sea Urchins
Scientific Name: Asthenosoma varium
Size: Up to 8 in. (20 cm)  
Depth: 3-200 ft. (1-60 m)
Distribution: Indo-West Pacific
Echinodermata (Phylum)
└Echinozoa (Subphylum)
 └Echinoidea (Class)
  └Echinothurioida (Order)
   └Echinothuriidae (Family)
    └Asthenosoma (Genus)

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© 2025 Florent Charpin