Araguaya River -

The river acts as a vital transition zone between the Amazon rainforest and the Cerrado savanna . It is home to more than 700 bird species and 300 fish species, including the giant otter, the pirarucú (one of the world's largest freshwater fish), and the endemic Araguaia River dolphin . Historical and Cultural Context

The (sometimes spelled Araguaya) is a massive waterway in central Brazil, stretching approximately 1,632 miles (2,627 kilometers) from its headwaters in the Goiás highlands to its confluence with the Tocantins River. Its name, derived from the native Tupi language, poetically translates to the "River of the Macaws" . Geography and Natural Wonders araguaya river

Today, the Araguaia is a central figure in Brazil's environmental and economic discussions: The river acts as a vital transition zone