SEASON: 1
SYNOPSIS
A tour of the mightiest rivers in the world, from the deep waters of Siberia's Lake Baikal, home to the world's only freshwater seal, to the wetlands downstream of Earth's tallest waterfall patrolled by frenzied piranhas. There is also footage of the lightning-quick ambush of wildebeest by crocodiles in Africa and macaque monkeys swimming underwater to catch crabs in Indonesia. Presented by David Attenborough.