In 2002, the University of New Hampshire initiated an interdisciplinary study of Jeffreys Ledge in order to better understand the physical and biological processes influencing this important ecosystem and to evaluate the effects of the closure. Our particular role in this study has been to help characterize the bottom habitats and to develop high-resolution seafloor maps using videography and bottom samples (along with acoustic surveys conducted by the UNH CCOM). To date, we have taken video of the bottom at 159 stations and bottom samples at 149 sites in a 10 by 15 mile area. Our camera system (Hubbard Camera) is composed of a video camera mounted on a frame with synchronized strobe lights and an integrated positioning system (GPS). We quantified features such as bottom type, burrows, tracks and trails, and epifauna (e.g., quahogs, sea scallops, anemones, sea stars, shrimp, brachiopods, and sponges — see examples of images). The results of the research are synthesized in GIS environments.