The National Marine Fisheries Service (NMFS) publishes its final List of Fisheries (LOF) for 2013, as required by the Marine Mammal Protection Act (MMPA). The final LOF for 2013 reflects new information on interactions between commercial fisheries and marine mammals. NMFS must classify each commercial fishery on the LOF into one of three categories under the MMPA based upon the level of serious injury and mortality of marine mammals that occurs incidental to each fishery. The classification of a fishery on the LOF determines whether participants in that fishery are subject to certain provisions of the MMPA, such as registration, observer coverage, and take reduction plan (TRP) requirements. The fishery classifications and list of marine mammal stocks incidentally injured or killed described in the Final LOF for 2012 remain in effect until the effective date of the Final LOF for 2013.