Among the parks, the Po delta is the largest wetland in Italy, characterized by large expanses of freshwater and brackish lagoons, fishing ponds, rivers, channels and floodplains that open up suddenly in the middle of countryside, a place where the border between land and water is never well defined but ever-changing and evolving. As for the Wildlife Sacca di Goro is a wetland of international importance for wintering of many species both terrestrial and aquatic.