Prehistoric Terror

Wade calls on the same instincts he uses to catch living monsters to uncover the most deadly underwater giants of all time. He must read the water (and in some cases the land) for clues in order to bring long-forgotten beasts to light. Using Wade's keen understanding of modern-day monsters, top scientific discoveries and state-of-the-art CGI, the apex killers of the prehistoric era such as the 25-foot, buzz saw-toothed Helicoprion and the bone-crushing Dunkleosteus, come to life as ancient monsters are featured on River Monsters for the first time.

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S07E04 - Alaska's Cold Water Killer