Summary description from Wikipedia:

Echinometra oblonga in languages:

English

Oblong Sea Urchin

Japanese

クロナガウニ

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Parent Taxon

• Echinometra

Sibling Taxa

• Echinometra insularis
• Echinometra lucunter
• Echinometra mathaei
• Echinometra oblonga
• Echinometra vanbrunti
• Echinometra viridis

Top Observation Places

• Honolulu