Bluemoon Posted December 18, 2014 Share Posted December 18, 2014 Pretty interesting story about pearl fish using old oysters shells to amplify swim bladder vibrations. The part about oysters and clams communicating by closing they're shells seems pretty logical to any reefer. http://news.discovery.com/animals/fish-converts-oyster-shell-into-speaker-blasts-noise-141217.htm Link to comment Share on other sites More sharing options...
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