One of the world's top paleontologists discusses paleontological evidence that contradicts myths about the feared Tyrannosaurus rex. Jack Horner says T. rex was not a hunter at all. The fiercest giant of dinosaur lore was but a well-designed scavenger that had much more in common with buzzards and hyenas than with lions and tigers. Includes computer-generated T-Rexes in action.

Two fierce predators, the oceanic white tip shark that inhabits deep offshore waters and the bull shark that patrols the murky shallows of rivers and estuaries, are examined. Underwater photographers search the depths off Hawaii for the dangerous and seldom seen oceanic white tip shark. Using their cameras for defense, they demonstrate how to survive an encounter with the predator responsible for the deaths of hundreds of shipwreck victims including those of the U.S.S. Indianapolis. In the shallow Bahaman waters, a scientist shows how to avoid being attacked by bull sharks using relaxation methods and body language technique.