David Attenborough - Episode 3 (Mammals)
Mammals dominate the planet. They do it through having warm blood and by the care they lavish on their young. Weeks of filming in the bitter Antarctic winter reveal how a mother Weddell seal wears her teeth down keeping open a hole in the ice so she can catch fish.
David Attenborough was broadcast on GEM at Wednesday 11 September 2019, 20:40.
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Catch up TV on David Attenborough's First Life. Watch the latest and all other episodes of David Attenborough's First Life now online, broadcasted on ABC1. Catch up on your favorite ABC1 TV show: David Attenborough's First Life. Replay tv on its best! David Attenborough traces the origin of life, going back to the very roots of the tree of life, in search of the very first animals that moved, to the first predators that killed and the first legs that walked on land.