Summary description from Wikipedia:

Heliocidaris erythrogramma in languages:

English

Western Pacific purple sea urchin

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Parent Taxon

• Heliocidaris

Sibling Taxa

• Heliocidaris australiae
• Heliocidaris bajulus
• Heliocidaris crassispina
• Heliocidaris erythrogramma
• Heliocidaris robertsi
• Heliocidaris tuberculata

Top Observation Places

• Sydney