They inhabited rivers, estuaries, and nearshore marine waters. It inhabits rivers, bays, inlets, estuaries, and creeks. It usually inhabits ponds, rivers, edges of lakes, estuaries and other freshwater wetlands. They live in sheltered areas such as seagrass beds, estuaries, coral reefs, and mangroves. River dolphins are the five cetaceans which reside in freshwater rivers and estuaries. They also enter estuaries and inhabit brackish waters. They frequently migrate through brackish water estuaries to freshwater springs. The peninsula includes wild coastal beaches and headlands, estuaries, and uplands. They are found in sheltered areas such as bays, bayous, lagoons, and estuaries. Agricultural nonpoint source (NPS) solution impacts lakes, rivers, wetlands, estuaries, and groundwater. Drowned river valleys are also known as coastal plain estuaries. It inhabits rivers and descends to estuaries and tidal flats to spawn. They can be found in harbors, bays, lagoons and estuaries. Some are on estuaries, rivers and canals near urban areas. They tolerate brackish water and will make use of coastal lakes and estuaries.