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River Jaws

Fish biologist Dr. Zeb Hogan tracks down two of Australia's most dangerous river shark species. First, he tackles the mighty bull shark ' a deadly predator capable of reaching lengths equivalent to a small car, then, the elusive speartooth. Little is known about the speartooth, many people are unaware of its existence. Joined by a curator from the Territory Wildlife Park, the team hopes to find a speartooth that could help researchers protect this extremely rare species.