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Next airing Sun Oct 2, noon ET

Russian Giants

Kamchatka, Russia, is one of the wildest and most remote locations on earth and is home to the largest salmon population on the planet ' but why? Zeb travels to the Far East to explore this salmon paradise. Determined to catch as many salmon species as he can, Zeb joins a team of kayakers and locals to explore some of the area's more than 14,000 rivers.