Andy and Kip head to the Galapagos Islands in the Pacific Ocean for a wild adventure in search of marine iguanas. These lizards eat seaweed that grows on rocks on the sea bed and, using his underwater rocket on his gadget pack, Andy follows some iguanas on a deep sea mission. He also discovers they have a rather nasty habit of snorting sea water out of their nostrils and gets soaked in the process. Luckily Kip's wondrous wet-wiping windscreen glasses help to keep some of the splashes off his face.