Dr. Riley Elliott returns to 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.Dr. Riley Elliott returns to 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.
