Location: Komodo, Indonesia
Florent's Guide To The Hawaiian, South Pacific and
Indo-Pacific Reefs
Longspine Heart Urchin
Maretia planulata
Scientific Name: Maretia planulata
Also known as: Hearth Heart Urchin
Category: Heart Urchins
Size: Up to 2 in. (5 cm)
Depth: 3-150 ft. (1-45 m)
Distribution: Indo-Pacific
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© 2026 Florent Charpin