River that separates the states of Piauí and Maranhao, the Paranaíba extends by almost 1,500 kilometers and, before ending at the Atlantic, it in the open sea forms the unique delta of Americas and one of the three majors of the world.
As if they were the fingers of a been openhanded, the river is divided in five channels and forms more than 70 islands and one infinity of lagoons, ecological labyrinths of igarapés (narrow natural channels between the islands) and refuges.
Wonders of this nature can only be found in other two places of the world, the delta of the Mekong river, in Vietnam (Asia) and the delta of the Nile, in Egypt (Africa).
They complement the beauty of the delta of the Paranaíba river flocks of herons, toucans, jacarés-of-papo-amarelo, macacos-prego, wild horses, mico-leão, vixens and deer.
All this rich fauna can be observed in trips in small river crafts, that make trips by the delta. One of the majors islands is the one of the Caju, nails ecological where a rare combination of ecosystems serves from animal refuge in extinction and migratory birds.
Besides an ebullient vegetation, filled with cajueiros and forests of manguezales, the island has 25 kilometers of half-wild beaches, igarapés, dunes and lagoons of fresh and crystalline waters formed in rains.