Mysterious In Its Movements Ferocious And Feared The Tiger Shark Is A Highlyadaptable Hunter Willing To Swallow Up Whatever It Can Catch Even A Turtles Shell Offers Little Resistance To Its Powerful Jaws And Sawedged Teeth Today Sharks The World Over Are Suffering From A Range Of Environmental Pressures Can These Prehistoric Predators Survive The Mounting Assaults Of The 21st Century