Estuarine ecosystems are unique environments where freshwater from rivers meets and mixes with saltwater from the ocean. These areas, often characterized by brackish water, provide vital habitats for a variety of species, including fish, birds, and invertebrates. Estuaries serve as nurseries for many marine organisms, offering shelter and abundant food sources. These ecosystems also play a crucial role in filtering pollutants and improving water quality. They help protect coastlines from erosion and act as buffers against storms. Additionally, estuarine areas support diverse plant life, such as mangroves and salt marshes, which contribute to the overall health of the environment.