Martin begins this new adventure in French Polynesia where he swims with sharks, investigates Marlon Brando's wildlife programme, and meets a local horse whisperer.

In Vanuatu, Martin climbs an active volcano and meets a tribe who worship Prince Philip. In Tonga, the presenter meets a third gender leiti and a princess. And in Fiji he visits an island singer and a tribe tricked out of their homeland by a British mining company.

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 Papua New Guinea to experience life among the subsistence farmers of the Trobriand Islands. Next, he visits the volcanic isle of New Britain, where he's reminded of the fragility of island existence in the Pacific Ocean.

From Manila's jeepneys and bamboo bikes to Catholic fiestas and family feasts, Martin explores the wonderful sights of the Philippines, including tribal burials, rice god rituals, shamans, and cuddly tarsier primates.

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.