The online Benthic Habitat Viewer (BHV) database, developed and managed by the National Centers for Coastal Ocean Science (NCCOS), provides easy access to a large database of underwater imagery characterizing coral reef organisms and habitats. The database holds over 9000 underwater seafloor images, taken during mapping missions from 2004-2006 in Puerto Rico and the U.S. Virgin Islands. These data were collected to support comprehensive seafloor characterization of the U.S. Caribbean. Funded by NOAA’s Coral Reef Conservation Program, the online database facilitates a variety of coral reef mapping, research, management and educational opportunities. The underwater imagery is accompanied by information on image location, biological inventory, benthic habitat characterization, geomorphological structure, and seafloor terrain characteristics (i.e., bathymetry, slope, and rugosity). The database will continue to be updated with additional imagery as data is collected from future missions.