''Echinothrix calamaris'', known commonly as the banded sea urchin or double spined urchin among other vernacular names, is a species of sea urchin in the family Diadematidae.
Similar species: Hollow-spined Urchins
Uploaded Oct 26, 2018. Captured May 23, 2018 12:21 in Unnamed Road, Pasirpanjang, Lembeh Sel., Kota Bitung, Sulawesi Utara, Indonesia.
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