Dolphins were spotted in 2009 doing something unusual. A new study sheds light on the reasons behind it
CNN
In the Red Sea off the coast of Egypt, bottlenose dolphins were spotted in 2009 doing something unusual. They lined up to rub their bodies against a particular type of coral.
They were choosy about which type of corals they rubbed against, noticed wildlife biologist Angela Ziltener, a guest researcher at the University of Zurich who spent the next 13 years trying to unravel the perplexing behavior.
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