Submerged aquatic vegetation (SAV), or underwater grasses, improve water quality, provide habitat and food for marine life, and serve as an important indicator of health of the Chesapeake Bay. The Virginia Institute of Marine Science, Environmental Protection Agency’s Chesapeake Bay Program, and other partners monitor underwater grasses through an annual aerial survey. This data helps researchers monitor changes in SAV distribution and abundance across the Chesapeake Bay, as well as in smaller segments like the Potomac River. Sanctuary staff use this data to study long-term changes in SAV within the sanctuary.
Since 2022, in partnership with the Maryland Department of Natural Resources and Chesapeake Bay SAV Watchers, sanctuary staff have conducted annual sampling of SAV to better understand the species diversity and density within the sanctuary. Volunteers have been a key part of carrying out these surveys and sanctuary staff plan to coordinate a volunteer survey each year to continue this monitoring effort.
To learn more about how to participate in an SAV Survey, visit our Community Science page.