John Nettles explores the late naturalist Gerald Durrell's legacy as he follows the work of a small group of people trying to save endangered orangutans on Jersey and Sumatra.
The journey begins on the Galapagos' west side at the youngest and most volcanically active islands in the archipelago, Isabela and Fernandina, which are home to a richly diverse wildlife scene. Here, Liz and the team journey into the clouds above Wolf, the tallest volcano in the Galapagos, where they join a group of biologists hunting for the elusive pink iguana, which teeters on the edge of extinction. But how and why did it come to live on the top of a volcano? Back on the research vessel, Liz boards Alucia's Triton submersible to descend a kilometre into the ocean abyss in search of a new species hiding in the darkness. Liz also travels to one of the most remote locations in the Galapagos, Alcedo Volcano, in search of the largest population of giant tortoises. Plagued by drought in recent months, scientists are keen to find out how this prehistoric species has fared. Finally, Liz helps out with a groundbreaking science experiment to x-ray marine iguanas that have so far stunned the scientific community with a new mutation. As with all life on these remote islands, the key to survival is adaptation.
Fortey is on Hawaii to investigate how life colonises a newly-born island. The most remote island group in the world, by some estimates only one new species successfully colonised Hawaii every 35,000 years - yet the Hawaiian Islands teem with a great diversity of life. In search of the evolutionary secrets of how one species becomes many, Fortey encounters beautiful honeycreeper birds whose evolution rivals that of the Darwin's famous finches; carnivorous caterpillars who now can't eat leaves; and giant silversword plants that thrive in parched volcanic soil at 10,000 feet.
Using a specially designed hive, with a formidable arsenal of cutting-edge technology to monitor the bees, we enter the bees' miniature world. Chris and Martha also put to the test the very latest scientific findings about bees, to discover why they are one of the most incredible creatures on our planet.
There's a whole world, and more than one spectrum of sensations that animals are aware of, which surpass humans. There's a kind of "sixth sense" that some animals have, which still defies explanation. Call it extra-sensory perception animal abilities we can't entirely explain.