The Amazon River, which flows 4,000 miles from the Andes to the Atlantic, is the world's second largest. But it carries more water than any other river - more than the Nile, Mississippi and Yangtze combined.
The Amazon is wide and deep. It ranges from 11/2 to 6 miles wide in its course, and broadens to about 90 miles at its mouth. The river averages 40 feet in depth and is 300 feet deep in parts.Marine life in the Amazon includes the notorious piranha fish.
The Amazon basin, covering about 2.4 million square miles, contains the world's largest tropical rain forest, which is about two-thirds the area of the United States.