Stephen Fry and zoologist Mark Carwardine have a close encounter with grey whales, and meet the deadly Humboldt squid in a search for the mighty blue whale.

Stephen Fry and zoologist Mark Carwardine are in New Zealand, searching for animals close to extinction. They look for the last remaining kakapo, a fat, flightless parrot.

Stephen Fry and zoologist Mark Carwardine search for animals on the edge of extinction. While tracking the Komodo dragon, the travellers release turtles into the wild.

Stephen Fry and zoologist Mark Carwardine search for animals on the edge of extinction. In Madagascar, Mark and Stephen search for the aye-aye, a peculiar lemur.

Stephen Fry and zoologist Mark Carwardine search for animals on the edge of extinction. Are there any northern white rhinos still alive in the wild?

Stephen Fry and zoologist Mark Carwardine search for animals on the edge of extinction. They discover how the Amazonian manatee, a freshwater mammal, has survived.