Simon Reeve's journey along the equator across Asia begins off the coast of Sumatra, in the far west of Indonesia. A collection of perhaps 18,000 islands here are home to more than 220 million people. At night the islanders sing of lost loves and the lure of working on the mainland.
The third and final programme in the series starts in the Galapagos Islands, where Simon goes swimming with sea-lions. The islands might look gorgeous, but Simon discovers there are concerns that the 100,000 tourists who visit each year are threatening the fragile ecosystem.
