Scientists test hearing in Bristol Bay beluga whale population

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How well do marine mammals hear in the wild? A biologist and his colleagues are the first to publish a study of hearing in a population of wild marine mammals. In human populations, there is variability in our hearing ability: older people don't hear as well as younger people; males don't hear high frequencies as well as females. But in the tested beluga population, there was surprisingly little variation. "The bottom line is they all hear pretty well," said the lead researcher....
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