Anavilhanas Ecological Station is an ecological station in Brazil in the state of Amazonas. The Anavilhanas archipelago includes hundreds of islands in the Rio Negro (Black River). With its impressive black waters, it has an extremely abund
ant aquatic life with several species of fish, like the famous Pirarucu, Tucunare, piranhas, as well as crocodiles, dolphins and manatees.
Izvor fotografije: paradiseintheworld.com
The Ecological station is constituted by a 100.000 ha. archipelago, of hundreds of elongated islands and canals within the Rio Negro riverbed, covered by inundated forests. Included to these are 250.000 ha. of not-flooded forests on the riversides. The rive is 1 to 3 Km wide and 5 to 35 m deep. Sessonal variation of the water is +/- 10 m.