''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 Aug 14, 2018. Captured May 16, 2018 12:39 in Unnamed Road, Batulubang, Lembeh Sel., Kota Bitung, Sulawesi Utara, Indonesia.