Martin explores the Galapagos, getting up close to sealions, iguanas, tortoises, penguins, finches and baby sharks. He joins conservation expeditions, sees evolution in action, visits a nun, an organic farm and the site of a murder mystery.

Martin travels to Guam to see the effect of invasive species on remote islands and discovers animals driven to the edge of extinction. In Palau, he learns about marine conservation and meets the endangered hawksbill turtle and the rare dugong.