![](https://image.tmdb.org/t/p/w92/4FoC3UAidp9iyhSaKJMmwY5Liy0.jpg)
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.
Riley Elliott,
Kina Scollay
Added on HBO 2023-07-18.