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For filmmaker Rob Stewart, exploring sharks began as an underwater adventure. What it turned into was a beautiful and dangerous exploration of the balance of life on earth.

Driven by a lifelong fascination with sharks, he discovers these magnificent creatures have gone from predator to prey, and how despite surviving the earth's history of mass extinctions, they could easily be wiped out due to human greed.

To protect these founders of the seas, Stewart teams up with renegade conservationist, Paul Watson. Their unbelievable adventure starts with a full-on battle with shark poachers in Guatemala, resulting in pirate boat rammings, gunboat chases, mafia espionage and attempted murder charges.

Featuring some of the most remarkable underwater footage ever committed to camera, this stunning HD presentation of the ancient ocean ecosystem will leave you breathless.