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What's quieter than a fish? A school of them - EurekAlert


<p>Swimming in schools makes fish surprisingly stealthy underwater, with a group able to sound like a single fish.</p> <p>&nbsp;</p> <p>The new findings by Johns Hopkins University engineers working with a high-tech simulation of schooling mackerel, offers new insight into why fish swim in schools and promise for the design and operation of much quieter submarines and autonomous undersea vehicles.</p>

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