A Pink River Dolphin in the water of Acajatuba Lake, a tributary of Rio Negro in the Amazon, Brazil. (Photo by Franco Banfi / Barcroft Media / Getty Images)

Pink Dolphins - Brazil -Rio Negro

Species of Amazon River Dolphin.jpg

Boto, or Amazon River Dolphin (Inia geoffrensis) WILD, Rio Negro, BRAZIL by Danita Delimont

The Amazon River in South America is the second longest river in the world and by far the largest by waterflow with an average discharge greater than the next seven largest rivers combined (not including Madeira and Rio Negro, which are tributaries of the Amazon). The Amazon, which has the largest drainage basin in the world, about 7,050,000 square kilometres (2,720,000 sq mi), accounts for approximately one-fifth of the world's total river flow.

The Archipelago of the Anavilhanas in the Amazon Rainforest, Brazil (by nboliveira).

Vidigal Beach. Rio de Janeiro, Brasil.

"Meeting of the Waters" is the point at which the Rio Negro meets the Rio Solimões in the Brazilian state of Amazonas - Manaus City. Due to differences in temperature, speed and density, the two rivers' differently colored waters don't mix immediately, but flow side by side for several miles.

Ilha Grande - Rio de Janeiro, Brazil

Blue Lake Cave, Brazil

Glacier National Park

Aspen, Colorado

Float down the river of Xcaret, Riviera Maya, Mexico

Vista aérea da Floresta Amazônica.

Iceberg Lake, Glacier National Park, Montana, USA


Autumn in Louisiana, Lake Fausse Pointe

Reflection of Cypress Trees in the Frio River - Texas, USA

Pantanal, Brazil

Giant river otter. Photo: Bertie Gregory

Photograph by Mike Bueno, Your Shot. Birds in the Pantanal of Mato Grosso in central-western Brazil.