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Stafford and her research team published their results on April 4 in the journal Biology Letters.But bowheads have developed their underwater cultures over millions of years.its this great mystery.

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We simply cant see what theyre doing.Thanks for signing up!The green dot shows where scientists moored an audio recording hydrophone about 80 meters below the surface.

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Why are they changing their songs so much? asked Stafford.

the meaning and structure of their songs remains cryptic.thumbnail_url:https:\/\/zmgvideos.

Humpback whale songs have been recorded extensively.Credit: Kate Stafford/University of WashingtonBetween 2010 and 2014.

Mashable Light SpeedWant more space and science stories in your inbox?Sign up for Mashables weekly Light Speed newsletter.created_at:2018-03-23T19:57:15.

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