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Track a pregnant shark along the Great Barrier Reef, before searching for signs of mating along the southern coast that could reveal a very shy female megashark.
Embark on a dangerous tagging mission in South Australia, before heading north as a team chases tiger, bull and hammerhead sharks.
Stay up late as the northern team attaches an activity tag to a bull shark, before diving 80 metres deep to put a satellite tracker on a great white.