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Season 1

  • S01E01 Cauldron of Life

    • March 30, 2017
    • BBC One

    Liz joins a team of biologists atop a volcano studying the endangered pink iguana. She descends a kilometre into the ocean abyss in search of new species hiding in the dark. She learns about a project studying mutations in marine iguanas.

  • S01E02 Secrets of the Deep

    • April 6, 2017
    • BBC One

    Liz joins a team of scientists aboard a deep-sea submersible in search of an elusive ocean giant - the sunfish. She discovers how El Nino has effected the sea-lion population and helps with the tagging and tracking of hammerhead sharks.

  • S01E03 Future Frontiers

    • April 13, 2017
    • BBC One

    Liz and the team see the impact humans have had on the oldest islands in the archipelago. Liz descends into a lava cave and meets a man working to protect giant tortoises. She dives to witness the birth of a new island.