In April of 2008, the popular tourist destination of Zihuatanejo Mexico is transformed from a safe haven of crystal clear water into one of the most dangerous beaches in the world following three violent shark attacks, two of them fatal.

The densely populated coastline of Southern California has suddenly come under attack by nature's largest and most ferocious predator, leaving unsuspecting beach goers at the mercy of a bloodthirsty beast with a taste for human flesh.

Florida's picturesque mid-Atlantic coast has long been a popular destination for surfers and swimmers, but three recent shark attacks in a 24-hour period are spreading fear across the beaches. Join Nat Geo WILD as we investigate the shocking attacks to find out what turned these peaceful shores into a feeding ground for unwanted visitors -- and if it will happen again.