Researchers diving on the wing of a U.S. PBY Coronado seaplane sunk in approximately 24 meters (80 feet) of water outside Saipan’s barrier reef. Only a few local divers are aware of the site, and it has never before been archaeologically recorded. The team conducted a photogrammetric survey of the site to create a 3D model and collected eDNA samples to compare this deepwater Coronado to a shallow water Coronado in 6 meters (20 feet) of water inside the lagoon.