Strange that this was being discussed here on the forum as a possibility -- I just heard on the news that the mass dolphin beaching in the Keys might be a result of sonar. A Navy submarine was using sonar during training exercises 25 miles south of Key West shortly before the dolphins started coming ashore. Apparently, the sonar waves carry for many miles in the water. They say the dolphins may have been frightened or disoriented by the sound.

Now I am a believer. And 20 of the dolphins have now died.