8:30pm – Friday, May 4 on ABC2
In this their final challenge, the athletes will be tested more than ever as they struggle to stay afloat in the open Pacific.
They are heading for two tiny islands just off the south coast of Manus Island, 320km north of Papua New Guinea. Here they will stay with an intense water tribe called the Titans.
They must master outrigger canoes and survive an epic race that will take them around a 40km course over two days, through shark-infested waters. And they must sleep on crocodile-inhabited islands.