The resources of Mallows Bay-Potomac River are easily accessed by shore and water. This site is a living laboratory for people of all ages to learn about its history, heritage, and connected ecosystem.

A Shipwreck with trees and other plants growing from it

Photo: Kimberly Hernandez/MD DNR


The Ghost Fleet emerges at low tide to reveal vessel construction and the lasting impacts of ship breaking and alteration by natural processes.

A native american in a traditional headdress

Credit: Matt McIntosh NOAA

Indigenous History & Culture

Tribal culture is integral to the history and heritage of the Potomac River. The sanctuary coincides with the traditional homeland and cultural landscape of three Native American tribes.

Ocean Guardian logo

Ocean Guardian

Ocean Guardian Schools make a commitment to the protection and conservation of its local watersheds, the world's ocean, and special ocean areas, like national marine sanctuaries.

Scuba instructors teaching students in a pool

Credit: Sammy Orlando

Diving with a Purpose/National Association of Black Scuba Divers

Diving with a Purpose supports conservation and protection of submerged heritage resources by providing education, training, certification, and field experience to adults and youth in the fields of maritime archaeology and ocean conservation.