The Life of Mammals
Return to the Water
TV-G
S1 • E7 Jan 14, 2003 58m8.1
David Attenborough discovers that while mammals such as manatees and sea otters left dry millions of years ago, the blue whale has always had its home in the sea. And though some marine mammals such as seals and sea lions still come ashore to breed, many conduct their mating rituals in the water.
