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an oceanographer at the University of Washington.com\/cms\/2018\/3\/65bd8512-255c-0320\/dash.

getElementById(video-title-container-qGo5wEYqnW).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.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.

Why are they changing their songs so much? asked Stafford.The songs typically lasted between hours and days.

Sign Me UpBy signing up you agree to our Terms of Use and Privacy Policy.The marine mammals seem to be altering their songs each year.

they largely avoid getting cancer.though theres no evidence of this.