A humpback whale has broken the world record for travel by any mammal, swimming at least 9,800 kilometers (6,125 miles) from the Atlantic to the Indian Ocean in search of a mate, marine biologists reported in Biology Letters.
Her incredible journey was more than twice as far as humpbacks usually manage on a single migration.
The whale was first photographed by researchers from a boat as she cruised off the east coast of Brazil in 1999.
Just over two years later, in 2001, she was one of a trio of whales spotted in the Indian Ocean off Madagascar’s east coast by a commercial whale watch boat, and identified by the distinctive markings on her tail.
Scientists as yet do not know whether the female's incredible journey was intentional or the result of a navigational error.