Shark enthusiasts compete for a crew spot on shark scientist Dr. Riley Elliott’s next shark diving expedition.
Shark scientist Riley Elliot is on Norfolk Island to discover if the practice of tossing animal carcasses in the sea has changed the behaviour of the area's huge tiger sharks.
Dr. Riley Elliott returns to Australia's Norfolk Island with underwater cinematographer Kina Scollay to see what happens when the island's tiger sharks go head-to-head with migrating great whites over an unusual food source: cow carcasses.
