The Estuarine - Lagoon Complex Iguape -
Cananéia -
Paranaguá, (Lagamar) describes the coastal plains of the
south coast of
São Paulo State
(Lower Ribeira Valley) and north coast of
Paraná.
It is composed of numerous lagoons, ocean arms, bays, estuaries,
pioneer formations,
islands and isolated hills which were formed by either marine or fluvial sedimentation of the
Ribeira de Iguape river.