08/19/2026
Celebrating 27 years of science, stewardship and connection.
On August 19, 1999, the Guana Tolomato Matanzas National Estuarine Research Reserve was officially designated as part of NOAA’s National Estuarine Research Reserve System, one of only 30 reserves nationwide today.
That designation built on decades of conservation work and opened a new chapter for understanding, protecting and sharing this remarkable estuary.
Today, GTM spans more than 75,000 acres of salt marshes, tidal creeks, maritime forests and beaches, places where science informs conservation, wildlife finds refuge and people connect with the natural world.
We’re grateful to the volunteers, visitors, students, researchers, partners and neighbors who continue to be part of GTM Research Reserve’s story. Consider celebrating with us by spending some time here, whether you’re discovering GTM for the first time or returning to a place you already know and love.
Here’s to protecting and sharing this extraordinary place for generations to come.