Orca Vs. Great White

Researchers investigate whether orcas have begun hunting great white sharks off the coast of New Zealand.

Sharktopia

Sharktopia - Shar Week

Return to Headstone Hell

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.