You may be able to see a Sharknado from miles away, but not necessarily the creatures lurking right off the beach. To solve that, Australia's using transmitters attached to some 320 sharks, and Twitter, to warn beach-goers when big sharks are near. That's only if those sharks get within a kilometer or so of major beaches, where they can become a threat to swimmers who are mistaken for a meal. The system's designed to alert swimmers before they get in the water, as well as lifeguards and other beach patrols.
via The Verge - All Posts http://www.theverge.com/2013/12/27/5248484/australia-taps-twitter-to-alert-beach-goers-of-incoming-shark-threats
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