evidence: Navassa Island is located approximately 50 km west of the southwestern tip of Haiti (fig. 1) and is an uninhabited, pear-shaped island 4.64 km2 in area (Miller and others, 2008a). In 1857, Navassa became the third permanent overseas possession of the United States when it was claimed under the Guano Islands Act (Skaggs, 1994) for its substantial phosphate deposits. In 1999, Navassa Island and a 12-mile radius of marine territory were designated as a National Wildlife Refuge under the jurisdiction of the U.S. Fish and Wildlife Service (Miller and others, 2008b). In 2006, the National Oceanic and Atmospheric Administration (NOAA) Center for Coastal Fisheries and Habitat Research conducted the first high-resolution, multibeam bathymetric survey around Navassa Island (Piniak and others, 2006). A 1-meter spatial resolution digital elevation model (DEM) produced by NOAA served as the dataset for the fractal analysis. The study area extended approximately from 18° 25' 17.70" N, 75° 02' 20.50" W to 18° 22' 55.49" N, 74° 59' 34.32" W. The DEM was rotated 32° clockwise to align it with the computational grid used for the fractal analysis (fig. 2). [...] Zawada, D.G., 2011, Fractal analysis of the Navassa Island seascape: U.S. Geological Survey Data Series 592, available online only at https://pubs.usgs.gov/ds/592/.