Zambezi: Wild and unnavigable, Africa's iconic Zambezi boasts the world's mightiest waterfall. Jeremy investigates why this great river is in trouble. [S,AD] S1 Ep6
Yangtze: The Yangtze was once home to rare aquatic mammals and prodigious quantities of fish. Jeremy Wade explores what might still lurk in its murky currents. [S,AD] S1 Ep5
Amazon: Disgorging more water than the next nine biggest rivers combined, the Amazon is the mightiest of all the rivers. Just scratching the surface would take years. [S,AD] S1 Ep2
Amazon: Disgorging more water than the next nine biggest rivers combined, the Amazon is the mightiest of all the rivers. Just scratching the surface would take years. [S,AD] S1 Ep2
Danube: Jeremy goes in search of two giant beasts: a fish so valuable criminals are hunting it out of existence, and a man-sized predator that's become the stuff of dreams. [S,AD] S1 Ep1
Danube: Jeremy goes in search of two giant beasts: a fish so valuable criminals are hunting it out of existence, and a man-sized predator that's become the stuff of dreams. [S,AD] S1 Ep1