slate pencil urchin
- kingdom: Animalia
- phylum: Echinodermata
- class: Echinoidea
- order: Camarodonta
- family: Echinometridae
- genus: Heterocentrotus
- species: Heterocentrotus mamillatus
Barrigada Village
Barrigada
Mangilao Village
Mangilao
Mongmong-Toto-Maite Village
Mongmong-Toto-Maite
Guam- Pitcairn
Honolulu
Hawaii
United States
Batuidu
Talisay
Adamstown