Petty Officer Hanley trains a sea lion to hook up lines to practice ordnance in a training pen at Explosive Ordnance Disposal (EOD) Mobile Unit Four. The unit trains dolphins and sea lions to retrieve underwater ordnance. Photo by PHC(DV) Reinhard, Dece
Categories: Animals on Board
 
 
Thank you to the Mario Family Foundation for enabling the digitization of the U.S. Naval Institute’s Photo Archive. The physical photos in the Photo Archive are stored in the Mildred M. Mario Photo Archive Room located at the U.S. Naval Institute’s Headquarters in Annapolis, MD.

©2025 U.S. NAVAL INSTITUTE