Navy sonar harms whales and dolphins. Watch a video shot by the Center for Whale Research in Washington state. Hear what the sonar sounds like and see what it does to these marine mammals. Earthjustice is working to get the Navy to use their sonar in places where it won’t harm whales and dolphins.

The incident recorded in this video occurred in Puget Sound in May 2003, and was investigated by the National Marine Fisheries Service, Office of Protected Resources.