Pale Rock Boring Urchin (Echinometra mathaei) ナガウニ – ‘Ina – size 7cm
The Pale Rock Boring Urchin is very common and in shallow areas where there is wave action. Due to feeding and wedging they bore into the rocks. Amami 2018
A younger rock boring urchin lacks the white tips of the spines. The color varies from pink to olive like the one above. Amami 2019
Pale Rock Boring Urchin. Kauai 2004