books.google.co.uk - Brackish water can be found wherever sea water is diluted by freshwater to form water of intermediate salinity. The ephemeral habitats of estuaries, coastal lagoons and inland seas are rich in fauna, but are threatened by rising sea levels, drainage and reclamation of low lying coastal land, storms and...http://books.google.co.uk/books/about/The_Brackish_Water_Fauna_of_Northwestern.html?id=6xW2rkp-Yb0C&utm_source=gb-gplus-shareThe Brackish-Water Fauna of Northwestern Europe
