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Dr. Riley Elliott returns to Australia's Norfolk Island with underwater cinematographer Kina Scollay to see what happens when the island's tiger...

Shark expert Kina Scollay and his elite team return with a unique one-person submersible, the Mechashark, to a top secret location off New Zealand...

In New Zealand, shark experts simulate epic battles between great whites and 60-foot leviathan, studying orca tactics to find the ultimate predator.

Sharktopia - Shar Week

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

Penny’s world implodes when she accuses her husband Phil of a sex crime against her daughter’s teenage friend and nobody believes her.