With its perfectly round shape and radiating spines, the Green Sputnik Urchin looks like something that drifted in from another planet. The intricate pattern of spines and natural symmetry make it a favorite among shell and marine specimen collectors.

These fascinating sea urchins inhabit coastal waters where they use their spines for protection and movement along the seafloor. Once cleaned and preserved, their skeletons reveal an incredible level of natural geometry. Whether displayed on a shelf, desk, or in a cabinet of curiosities, a Green Sputnik Urchin is a striking reminder of the artistry found in the natural world.