The Impractical Jokers are the kings of hijinx and fearlessness in the face of public humiliation, but see what happens when they set out to dispel the myth that sharks are maneating beasts the only way they know how -- with extreme challenges and dares.

Experts search for a big mako terrorizing the shores of Southern California to determine if it could be the spawn of a legendary shark, The Beast.

Dr. Tiara Moore has discovered bull sharks thriving in polluted, algae-filled lagoons. Teaming up with Dr. Craig O'Connell, they study why pregnant females still migrate there and how their pups survive in a seemingly hostile environment.

Johnny Knoxville sends Steve-O, Chris Pontius, and new Jackass cast members on a Shark Week mission for the ages. They'll dial up a series of shark stunts that test their bravery and threshold of pain as they put common shark myths to the test.

Legendary boxer Mike Tyson goes head to head underwater with the most unlikely training partner: a massive shark. He tries to score a TKO, all in the name of research.

Investigating why young bull sharks travel up the Serena River and how they avoid predation.