A military marine mammal is a cetacean or pinniped that has been trained for military uses. Examples include bottlenose dolphins, seals, sea lions, and beluga whales. The United States and Soviet militaries have trained and employed oceanic dolphins for various uses. Military marine mammals have been trained to rescue lost naval swimmers, guard navy ships against enemy divers, locate mines for later clearance by divers, and aid in location and recovery of equipment lost on the seabed.
A mammal trainer of the U.S. Navy Marine Mammal Program demonstrates techniques with a bottlenose dolphin to local students during Fleet Week in San Diego, California, November 2023.
U.S. Navy Machinist Mate 3rd Class Aaron Nutt tends to a dolphin aboard a C-17 Globemaster III aircraft assigned to the 535th Airlift Squadron, 15th Airlift Wing while en route to Noumea, New Caledonia 091108-F-LX971-220
US Navy Petty Officer Second Class Chris Roath of the Explosive Ordinance Mobile Unit 3, Detachment 6 Marine Mammal Systems briefs Lieutenant General Norty Schwartz, Commander of Alaskan Command and Alaskan 010321-F-LX971-011