Biology
Fossil barnacles, the original GPS, help track ancient whale migrations
Barnacles that hitchhiked aboard humpback whales tell of prehistoric yearly migrations Barnacles that hitch rides on the backs of humpback and gray whales not only record details about the whales' yearly travels, they also retain this information after they become fossilized, helping scientists reconstruct the migrations of whale populations millions of years in the past, according to a new University of California, Berkeley, study.
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