A look at the different types of sharks that live in earth's oceans, while cameras follow a dangerous tagging mission in South Australia.

Tracking 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.

The northern team attach an activity tag to a bull shark, before diving 80 metres deep to put a satellite tracker on a great white.

A team studies how young blacktips learn social and survival skills, while another tries to catch the sand tiger shark's most elusive behaviour - mating.

Investigating whether Greenly Island is popular with migrating great whites, as well as searching for a connection between northern bull sharks and their cooler-climate cousins.

The southern team test new migration tech, while the northern team catch and tag bull sharks in a bid to help local swimmers.