Fly-through from the south to the north along the Mariana Arc, zooming in and circling West Rota volcano first and ending up at Anatahan island (2 times vertically exaggerated). EM300 backscatter data (grayscale) is overlaid on bathymetry data (color). Black represents areas of high reflectivity and white represents areas of low reflectivity. EM300 backscatter and bathymetry data provided by Bob Embley (NOAA Vents Program) collected on the 2003 and 2004 Ocean Exploration Submarine Ring of Fire expeditions.