Martin begins this new adventure in French Polynesia, flying into its biggest island,Tahiti, for a traditional welcome of a floral garland around his neck as he walks through airport arrivals.

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's epic journey across the Pacific takes him to the Galapagos Islands for the third episode in the series.The legendary Galapagos Islands, a volcanic chain of 18 major islands, plus over 100 tiny ones, are 800 miles from the shores of South America. It's known as a ‘lost world' as many of its plants and animals exist nowhere else on earth, and until recently it attracted nearly a quarter of a million visitors a yearMartin is following in the footsteps of the great British naturalist Charles Darwin, who really put this place on the map when he sailed here in 1835. Last in series