Sea Lion Trains For U.S. Naval Duty

OFF THE COAST OF BAHRAIN - FEBRUARY 12: A Sea Lion trainer from Space and Naval Warfare Systems Center (SPAWAR), San Diego, works on hand signal commands with Zak, a 375-pound California sea lion, February 12, 2003 in the waters off the Persian Gulf nation of Bahrain. Zak is participating in the U.S. Navy's Space and Naval Warfare Systems Center's Shallow Water Intruder Detection System (SWIDS) program. Zak has been trained to locate swimmers near piers, ships, and other objects in the water considered suspicious and a possible threat to military forces in the area. The sea lions are trained to put tags or "restraint devices" on divers that can stop them from getting away. (Photo by Bob Houlihan/U.S. Navy/Getty Images)