Yes, the Navy has trained dolphins that aid the military branch in underwater exploration. In this case, the dolphins found a piece of history off the coast of San Diego.
Built about 130 years ago, the type of torpedo they found is called a Howell and it's one of the first torpedoes built that can propel itself. Only 50 of the 11-foot-long devices were made, and only two remain in existence.
The torpedo is now being cleaned and being made ready for it to be displayed at the Naval History and Heritage Command in Washington.