From: here@is.invalid   
      
   'Shark cams' reveal Ningaloo sea turtles freeze to escape predators'   
   gaze   
      
   Sea turtles stay still to avoid detection by prowling tiger sharks,   
   according to scientists who clamped cameras to the dorsal fins of the   
   apex predator off the coast of Western Australia.   
      
   About 70 hours of footage was captured from the backs of four sharks -   
   ranging between 2.8 and 3.5 metres long - at the World Heritage-listed   
   Ningaloo Reef near Exmouth, with the recordings altered to replicate   
   the black-and-white vision of the tiger shark.   
      
      
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)