What's Twitter--is it good to eat?

In Australia, a group called Surf Life Saving Australia has united with the Dept of Fisheries of Western Australia to tag a bunch of sharks--which then tweet a warning when they get near shore.

Well, hasn't THIS taken a long time in coming.

Sample:

SW Westpac Lifesaver Helicopter sighted 1m hammerhead shark 500m offshore @ Bunker Bay, tracking north. Lifeguards have been notified & beach remains open.

Does this mean a shark a yard long 500 miles away? I am bad with the metric system.

But I must say the least these predators can do is tweet a warning.

Watch out--this may make me want Twitter. At least when they do this for bears and mountain lions.