Thursday, November 21, 2013

The Sand Dollar Mystery



 
How does this sand dollar turn eventually into a white version of itself? I will tell you the velvety spines of live sand dollars appear in a variety of colors—green, blue, violet, or purple—depending on the species. The tests, or bodies, of dead individuals are often found on beaches, the textured skin missing and the skeleton bleached white by sunlight. So they turn into this...
 

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