The Living Planet (BBC 1984)
8 - Sweet Fresh Water
David Attenborough follows the river Amazon from the Andes to the sea.
The life in and around it changes as it flows on its four-thousand mile journey from cold torrents to a vast warm delta.
There are similar changes in other rivers, producing such variety as torrent ducks, mayflies, hairy frogs, piranhas, giant otters, fishing owls and the Marsh Arabs of Iraq.