[ptcPhoto filename=”StarSand640.jpg” title=”Star sand” caption=”Star sand on Taketomi’s Kaiji Beach – Okinawa, Japan” position=”center”]
We spent most of one afternoon searching for this “star sand” on a beach in Taketomi, Okinawa. Each piece consists of the exoskeleton of marine protozoa that once lived on the ocean floor, and measures barely a millimeter across. Sand stars are some of the oldest fossils known to humankind – there is evidence of them dating back 550 million years.
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