Presented by David Attenborough, this nature documentary investigates remote islands and their inhabitants. Some islands are tips of volcanoes, others are coral atolls. Those that colonise them transform into new species with comparative speed. Attenborough visits Aldabra in the Indian Ocean, which is 400 kilometres from the African coast. It has a vast population of sooty terns, which enjoy a degree of protection from predators that is unavailable on the mainland.
