Piedras Blancas State Marine Reserve (SMR) and Piedras Blancas State Marine Conservation Area (SMCA) are two adjoining marine protected areas that lie offshore of San Luis Obispo County on California's central coast. The combined area of these marine protected areas is 19.68 square miles (51.0 km2). The SMR protects all marine life within its boundaries. Fishing and take of all living marine resources is prohibited. Within the SMCA fishing and take of all living marine resources is prohibited except the commercial and recreational take of salmon and albacore.[1]