Emperor penguins cross a dangerous frozen sea to reach their breeding grounds; rockhoppers brave stormy seas and a 300-foot cliff; tropical humboldt penguins face sea lions and vampire bats as they make their way to their desert nests.
The male penguins hand over their newborns to the returning females.
The chicks are getting more independent.
David Tennant
Self
John Downer
Director
Philip Dalton
Producer
Matthew Gordon
Cassian Harrison
