MPAtlas.org, a project of the Marine Conservation Institute, provides a nuanced picture of global marine protection. The goal is to clarify and visualize the level of protection and implementation of the world's MPAs. The Atlas of Marine Protection uses the World Database on Protected areas (WDPA) data as a starting point and examines certain regions in depth, replacing WDPA records with national or regional databases that are more up-to-date or provide greater detail (e.g., using the NOAA MPA Center Inventory of US sites) and performing additional corrections based on original research.