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Chris, Jeff and Dickie search for the world's largest male great white.
Shark professionals re-enact five real-life attacks.
Designers create a 52-foot mechanical mega-shark based on the megalodon.
With reports of enormous fat white sharks appearing off the coast of New Zealand, scientists Tom Hird and Leigh de Necker set out to find one of these behemoths and determine if the great white can reach a staggering 6,000 lbs.