Navy Sonar Exposures Don’t Disturb Marine Mammals

The U.S. Navy exposed satellite-tagged animals to estimated received levels of 149 to 168 dB for a bottlenose dolphin, and 141 to 162 dB for a short-finned pilot whale.  The bottlenose dolphin showed no large scale movements out of the area despite these relatively high predicted received levels, and the short-finned pilot whale actually moved towards areas of higher exposures during the third day of a 3-day period of regular MFAS use.

Click here to read the report of these sonar exposure experiments.



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