Dugong Dive Navy Petty Officer 2nd Class Alec Stuller scuba dives near the HMAS Adelaide shipwreck during Exercise Dugong in Sydney, Australia, Nov. 14, 2016. The training exercise advances interoperability between the U.S and Australian navies. Navy photo by Petty Officer 1st Class Arthurgwain L. Marquez SHARE: Download: Full Size (2.86 MB) Credit: Petty Officer 1st Class Arthurgwain L. Marquez VIRIN: 161114-N-CW570-0058A.JPG Photo Gallery