Acting at the Bush administration's urging, the court will review a federal appeals court ruling that limits the use of sonar in training seminars. The administration says the decision by the 9th U.S. Circuit Court of Appeals in San Francisco jeopardizes the Navy's ability to train sailors and Marines for service in wartime.

The government also contends that national security interests can trump those of marine mammals, and that its use of mid-frequency sonar in training exercises hasn't caused any documented harm to dolphins or beaked whales in the waters where they're conducted. Arguments will take place in the next court term, beginning in October.