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 group of children look through binoculars

Credit: Tracy Hajduk


Mallows Bay – Potomac River National Marine Sanctuary offers a variety of free educational and fun resources for both teachers and students. From science and technology to history to learning about the environment, there is an activity just for you.

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.

Please contact the Piscataway Tribal Council to request authorization prior to using or reproducing this image.

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.