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The boto and the giant otter inhabit the Orinoco River system. [29] The Orinoco crocodile is one of the rarest reptiles in the world. Its range in the wild is restricted to the middle and lower Orinoco River Basin. [30] More than 1000 fish species have been recorded in the river basin and about 15% are endemic. [31]
The delta is fan-shaped, formed by the Orinoco River as it splits into numerous distributaries, called caños, which meander through the delta on their way to the sea.The main distributary is called the Rio Grande, which empties south-southeast through the southern portion of the delta, and the second major distributary is Caño Manamo, which runs northward along the western edge of the delta.
The Orinoco Basin is the part of South America drained by the Orinoco river and its tributaries. The Orinoco watershed covers an area of about 990000 km 2 , making it the third largest in South America, covering most of Venezuela and eastern part of Colombia .
Rivers with an average discharge of 5,000 m 3 /s or greater, as a fraction of the estimated global total.. This article lists rivers by their average discharge measured in descending order of their water flow rate.
To the east the Orinoco wetlands and Orinoco Delta swamp forests occupy the Orinoco Delta. [2] The Llanos' main river is the Orinoco, which runs from west to east through the ecoregion and forms part of the border between Colombia and Venezuela. The Orinoco is the major river system of Venezuela. [3]
This culture is thought to have originated at the lower Orinoco River near the modern settlements of Saladero and Barrancas in Venezuela. Seafaring people from the lowland region of the Orinoco River migrated into and established settlements in the Lesser Antilles, Puerto Rico, and Hispaniola. [1] They displaced the pre-ceramic Ortoiroid culture.
The Orinoco River (a massive river that runs throughout all of Venezuela) has poor water quality. As most of Venezuela's water comes from the Orinoco River, this poses a major threat. Water use
An Amazon river dolphin. Boto is a Portuguese name given to several types of dolphins and river dolphins native to the Amazon and the Orinoco River tributaries. A few botos exist exclusively in fresh water, and these are often considered primitive dolphins.