The Peconic Bay System is a coastal estuary located on the eastern end of Long Island, New York. It includes several interconnected bodies of water, such as Peconic Bay, Great Peconic Bay, and Little Peconic Bay. This system is known for its rich biodiversity, supporting various marine species, including fish, shellfish, and birds. The Peconic Bay System plays a crucial role in the local economy, particularly through fishing, boating, and tourism. It also serves as an important habitat for wildlife and a natural resource for the surrounding communities. Conservation efforts are ongoing to protect its unique ecosystems.