When Mr Hammond tasks Andy with making sure the marine iguanas are clean for their inspection, Andy mistakenly thinks that Mr Hammond is referring to the iguanas living in the reptile house. They are of course two different species. Not knowing the answer, Andy jets off to the Galapagos Islands to find out how marine iguanas keep themselves clean and gets quite a surprise when he discovers the truth. Along the way, he has a run-in with some racer snakes and gets help from a baby marine iguana to make his escape. But will Andy make it back in time before Mr Hammond notices he's gone?

With the imminent hatching of some new sand grouse chicks at Safari World, Andy and Jen suddenly realise that the sand grouse's nest is a long way from the watering hole. Given that the chicks can't fly, they are worried that the new chicks won't be able to drink. Jetting off in his safari-mobile, Andy heads to the Kalahari Desert in Africa. His mission: to find out how sand grouse chicks drink water. Along the way, he takes a ride with a herd of elephants before coming face to face with a predatory goshawk and taking to the skies with an adult male sand grouse in order to make his escape.