Shark attacks are hardly unheard of in Australia and I don't know if two fatalities in a year means a call for Robert Shaw is in order but there is some evidence that attacks are becoming more frequent. First though some background:
http://www.perthnow.com.au/news/recent-fatal-shark-attacks-in-australia/story-e6frg12c-1226129552664
http://www.perthnow.com.au/news/recent-fatal-shark-attacks-in-australia/story-e6frg12c-1226129552664
This is my home town, where my folks live. These two are from the next town along;September 4, 2011: Man in his 20s killed while bodyboarding with friends at Bunker Bay, near Dunsborough, in Western Australia.
So obviously there's a big debate going on about "what should be done". My first reaction is nothing should be done, we're in the ocean we know the risks, anyway it's more dangerous driving to the beach etc. But people don't always react logically to such things especially with the gore factor associated with this last one. Obviously you get a few in the US every year, what do you guys do, if anything?August 17, 2010: A 31-year-old man died from serious injuries after a shark attacked him while he was surfing near Gracetown in Western Australia's south-west.
July 10, 2004: Brad Smith, 29, attacked by two sharks, believed to be a great white and a large bronze whaler, as he surfed near Gracetown in Western Australia's south-west.