File:1.cidaristes imperialis(Sputnik urchin, imperial lance urchin);2.Echinus atratus (helmet urchin or shingle urchin);3.echinus globiformis (European edible sea urchin or common sea urchin);4.scutella radiata (small sand dollar);5.Scutella.jpg ...
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Helmet urchin or Shingle urchin | Stock Photo
Evolution Happens - Colobocentrotus atratus, also known as the helmet urchin or shingle urchin, is adapted for life in wave-battered rocky coasts. The spines on the side are flattened and scales on