Tasmania

S1, E4: In the tranquil south-east of Tasmania, Neil Oliver probes Port Arthur's harsh penal history. Brendan Moar examines the dramatic grip of lighthouse life on a remote Island. Emma Johnston dives into an underwater battleground to see how science and industry are saving the marine neighbourhood. Neil joins the southern hemisphere's largest wooden boat festival. Tim Flannery investigates Hobart's long and illustrious role in Antarctic exploration. Finally, Xanthe Mallett delves into the violent history of whaling, and the legacy that helped build a colony.