At Mallows Bay-Potomac River National Marine Sanctuary, the synergy of history and nature provide a truly unique experience. There’s something for everyone, whether you prefer to walk the shore, view wildlife, fish, or paddle the waters. The ships emerge at low tide and provide habitat important to osprey, bald eagles, herons, and an array of fish, plants, and animals.
Parks Providing Access
Learn how to access the sanctuary through different parks.
Know Before You Go
Get tips to experience Mallows Bay-Potomac River National Marine Sanctuary at its best.
Wildlife Viewing Guidelines
Encountering wildlife can be a once-in-a-lifetime opportunity. Follow wildlife viewing guidelines to make the most of the experience for both you and the wildlife.
Tour the Sanctuary
Learn how to make the most of your experience to the sanctuary.