An estuarine environment is a coastal area where freshwater from rivers and streams meets and mixes with saltwater from the ocean. This unique habitat is characterized by brackish water, which has a salinity level between that of freshwater and seawater. Estuaries are often rich in nutrients, making them vital ecosystems that support diverse plant and animal life. Estuaries serve as important nurseries for many marine species, including fish and shellfish, providing shelter and food for young organisms. They also play a crucial role in filtering pollutants, protecting coastal areas from erosion, and serving as recreational spaces for activities like fishing and birdwatching.