San Lorenzo Marine Archipelago National Park is a national park of Mexico located on San Lorenzo Island part of an archipelago in the Gulf of California off the eastern coast of Baja California. The San Lorenzo Archipelago is considered one of the most important ecological areas of the Gulf of California. The Island and surrounding areas are part of a rich ecosystem comprised by a grand variety of flora and marine fauna. This area is protected by the Mexican federal government Norma Oficial Mexicana NOM-059-SEMARNAT-2001 because of its importance as a habitat for several endangered species. The Archipelago is part of the municipality of Mexicali, Baja California.