Aug 9, 2010
Science Scene - Better than a Bell?
That will change now that marine biologists in Australia can follow the whereabouts of 75 of the man-eaters using radio-transmitter tags and a network of 20 satellite-linked buoys.
As a bonus, the work could give swimmers a heads-up when a great white is closing in. If a tagged shark swims within approximately a quarter-mile of a coastal buoy, the system sends a text to lifeguards on nearby beaches. Even swimming at top speed, it might take the dangerous fish a couple of minutes to reach shore, possibly enough time for the lifeguards to drop the phone and sunscreen and get folks out of the water.