ANCIENT SECRETS OF THE GALAPAGOS
A look at marine inguanas and flightless cormorant birds. Visit Darwin's Lake to study flowers.
The third and final episode in the Galapagos Islands features some of the "newer" islands, which are "only" a few hundred thousand years old. There are plenty of interesting creatures in the waters around these islands, like marine iguanas - the only known iguanas that swim in salt water and can stay underwater for more than an hour - and the Flightless Cormorant - a bird that uses its stubby wings to swim rather than fly. On Isabela Island, the crew visits Darwin's Lake - a saltwater lake - to study flower color and pollination and spends some time in Zodiac boats finding penguins endemic to the islands.