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(Hendrik
Freitag/National Geographic)
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Four new species of crab have been discovered in the
Philippine island of Palawan. And one of the crabs truly stands out with its
unusually bright purple shell.
It is believed that the
particular violet coloration might just have evolved by chance, and must not
necessarily have a very specific function or reason aside from being a general visual
signal for recognition.
The newly discovered crabs are quite small in stature, each from about an inch to two inches wide.
(Source)
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