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How it sounds when a dolphin superpod swims by

A superpod of Delphinus traveled a newly deployed sonobuoy in the Santa Barbara Channel in August 2017. These are the whistles, clicks and pulsed calls the hydrophone recorded as the animals passed by. (Audio by NOAA CINMS and Southall Environmental Associates, Inc. Permit CINMS-2014-001. Photo by Lindsey Peavey, Channel Islands National Marine Sanctuary.)
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