Florent's Guide To The

Tropical Reefs

Oblong Sea Urchin
Echinometra oblonga
Oblong Sea Urchin
Category: Sea Urchins
Scientific Name: Echinometra oblonga
Size: Up to 2.5 in. (6 cm)  
Depth: 1-10 ft. (0-3 m)
Distribution: Indo-Pacific, Hawaii, Gulf of California, Pacific Coast of Mexico to Peru
Echinodermata (Phylum)
└Echinozoa (Subphylum)
 └Echinoidea (Class)
  └Camarodonta (Order)
   └Echinometridae (Family)
    └Echinometra (Genus)

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© 2025 Florent Charpin