The series features the swollen rivers, flooded forests and dense canopy of the vast rainforest recognized as one of Earth's natural wonders, and offers a closer look at rarely seen animals as they contend with the volatile waters of the world's largest river system. The river's rich waters sustain seven-foot otters, fresh-water dolphins and manatee. On land, stealthy jaguars prowl, acrobatic woolly-monkeys defy gravity and keen-eyed harpy eagles soar. Rod Steiger narrates.