Naval Air Station Key West (NASKW) is comprised of 6,249 acres of land distributed over 14 properties located in the Florida Keys. Several properties interface with the marine environment and include substantial coastal improvements including piers, seawalls, boat basins, dredged channels, and marinas. Protected marine resources, including corals, occur on and adjacent to these facilities. It is important to the US Navy to understand the type and extent of protected marine resources that occur on and adjacent to their facilities. Regulated marine resources (e.g., ESA-listed and unlisted corals, seagrass habitats, natural hardbottom habitats) that could impact the ability of the Navy to maintain, improve, or repair shoreside facilities were assessed at selected Navy locations following established data collection methods for marine assessments. Assessing these resources in terms of location, abundance, and vulnerability will assist the Navy in project planning and implementation, allowing an advance assessment of the potential extent of impacts, means of resource avoidance, and possible resource mitigation strategies where applicable. The assessment of corals included a complete accounting of all ESA-listed coral species encountered, and a more general assessment of non-listed corals focusing on documenting the distribution and abundance of non-listed corals with general density estimates.