alexa Dolphins use extra energy to communicate in noisy waters

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Dolphins use extra energy to communicate in noisy waters

While dolphins expend only slightly more energy on louder whistles or other vocalizations, the metabolic cost may add up over time when the animals must compensate for chronic background noise. If they're repeatedly exposed to a lot of noise, the repeated effort to call louder or longer or more often that's where the impacts could become more significant. Some animals also react to nearby vessels and associated noise by slapping their tails on the water or breaching jumping clear out of the water. That could add to the extra effort required by louder calls to further drain their energy.

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