Join Chris and Martin as they learn about some of the amazing features and abilities of animals that are specialized to their environments. In this full episode with accompanying clips, Martin and Chris must protect a young koala stranded in the Australian Outback, and help him get back to his Eucalyptus forest habitat. On their quest to return the adorable animal home, the brothers discover lots of interesting facts about how animals are specialized to their own environment. With some tips from an intrepid desert dweller called the thorny devil, they must survive the desert crossing and bring the koala home.