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Fish occur in populations of billions and there are over 30,000 species, more than in any other group of backboned animals. The development of the backbone was a crucial advance in evolution -and it probably came from a most unlikely source, a little jelly-like creature called a sea squirt.
Episodes
EP 1
The Infinite Variety
1979-01-16
EP 2
Building Bodies
1979-01-23
EP 3
The First Forests
1979-01-30
EP 4
The Swarming Hordes
1979-02-06
EP 5
Conquest of the Waters
1979-02-13
EP 6
Invasion of the Land
1979-02-20
EP 7
Victors of the Dry Land
1979-02-27
EP 8
Lords of the Air
1979-03-06
EP 9
The Rise of the Mammals
1979-03-13
EP 10
Theme and Variations
1979-03-20
EP 11
The Hunters and Hunted
1979-03-27
EP 12
Life in the Trees
1979-04-03
EP 13
The Compulsive Communicators
1979-04-10
Voice Cast
David AttenboroughSelf - PresenterVoice Actor
Trailers & Extra Content
Sir David Attenborough - The story behind Life on Earth - BBC
