Visitors (S01E02)

In this episode, David Attenborough deepens his journey through the Great Barrier Reef on the research vessel Alucia. He uncovers the fascinating array of wildlife that migrates to the reef annually, including birds and whales, with some traveling vast distances. Equipped with cutting-edge technology, David ventures into the shark-infested depths of Osprey Reef in the Triton submersible.