[ti:海洋岛屿 17]
[ar:Benedict Cumberbatch]
[al:]
[00:02.28]Each South Pacific island has its own unique set of creatures.
[00:11.13]With so many islands, this adds up to thousands of animals found nowhere else on Earth.
[00:22.66]Isolated by miles of ocean, human colonisers also developed different ways of life.
[00:30.36]Each culture has its own customs, and some are truly bizarre.
[00:42.19]The locals are in celebratory mood.
[00:55.66]This man is about to perform one of the strangest rituals in the world.
[01:09.47]It's a tradition that tests the mettle of the most courageous men.
[01:15.90]Having a head for heights is only the start.
[01:25.24]Forest vines are tied around his ankles.
[01:30.10]They will be his lifeline.