When two researchers discover a colossal shark's tooth off the Mexican coast, their worst fears surface: the most menacing beast to ever rule the waters is still alive and mercilessly feedin... Read allWhen two researchers discover a colossal shark's tooth off the Mexican coast, their worst fears surface: the most menacing beast to ever rule the waters is still alive and mercilessly feeding on anything that crosses its path.When two researchers discover a colossal shark's tooth off the Mexican coast, their worst fears surface: the most menacing beast to ever rule the waters is still alive and mercilessly feeding on anything that crosses its path.