Iguape-Cananéia-Paranaguá estuary lagoon complex
The Iguape-Cananéia-Paranaguá estuary lagoon complex () is a stretch of interconnected coastal estuaries and lagoons that extends southwest from Iguape in the south of São Paulo past Cananéia, São Paulo to Paranaguá, Paraná. It includes the Mar Pequeno in São Paulo, between Ilha Comprida and the mainland, and Paranaguá Bay in Paraná. Location The Iguape-Cananéia-Paranaguá estuary lagoon complex lies between (Barra do Una, SP) and (Morretes, PR) along the southeast São Paulo coast and the north Paraná coast. The complex covers an area of . The region is within the Vale do Ribeira, the poorest part of São Paulo. The population grew by 27.18% from 1960 to 1980, but fell by 2.17% between 1980 and 1989. As of 1994 the human population was 153,164 inhabitants. Altitudes range from . To the north the complex is bordered by the Juréia Massif and the Serra da Canavieira. In the south, Paranaguá Bay extends about inland, and has depths up to . The Paranaguá Bay is an estuarine system rather than an estuary, connecting to the sea through three tidal channels and interconnected with the Iguape-Cananéia Bay system to the north. Tidal amplitude is about . Environment The system includes many islands, barrier