A National Estuarine Research Reserve (NERR) is a protected area in the United States that focuses on the study and conservation of estuarine ecosystems. These reserves serve as living laboratories for research, education, and stewardship, helping to understand the complex interactions between land and water. They play a crucial role in preserving biodiversity and supporting local communities. NERRs are part of the National Oceanic and Atmospheric Administration (NOAA) and are established through partnerships with state agencies and local organizations. Each reserve is unique, reflecting the specific ecological and cultural characteristics of its region, while contributing to broader efforts in coastal management and conservation.