Life on Earth

Season 1, Episode 10

Episode Title: Theme and Variations

Air Date: 1979-03-20

Overview:

A look at some of the huge variety of mammals. Bats number over a thousand species, many hunt insects, some sip nectar, drink blood, and even catch fish. Contrast those which use sonar with the great whales that sing, the star-nosed mole and the giant anteater, and the potential variations become dramatically clear