Franciscana (Pontoporia blainvillei)

The Franciscana (also known as the La Plata dolphin) is the only river dolphin which lives in the sea and saltwater estuaries. It prefers shallow coastal waters and is found along the South American east coast, from Doce River in Brazil to Bahía Blanca i Argentina. In proportion to its body size (which is fairly small, only up to 1,7m) the Franciscana has the longest beak of any cetacean.