We scored our first major success when we plopped the Hafmynd Gavia AUV in the water and discovered to our surprise that her trim and buoyancy where spot on for the conditions in the local waters. The Hafmynd AUV carries a very special payload for advanced seafloor mapping using bathymetric sonar called GeoSwath Plus. This sonar allows us to map the shape and texture of the seafloor in ways that provide unprecedented resolution. Video Courtesy of NOAA Bonaire 2008 Expedition, NOAA-OE.