ONMS MPNMS News Archive News Archive 2019 Community Celebrates New Mallows Bay-Potomac River National Marine Sanctuary November 2019 NOAA Designates New Mallows Bay-Potomac River National Marine Sanctuary July 2019 2017 Describing the Proposed Mallows Bay-Potomac River National Marine Sanctuary National Marine Sanctuary February 2017 NOAA Moves to Conserve Shipwrecks in Two New Sanctuaries January 2017