under way for a huge shark that attacked and killed a surfer in australia over the weekend. remarkable story. it s the fifth deadly shark attack in the past ten months there, and that could lead to policy changes over protecting great whites. here s abc s john schifrin. reporter: authorities in australia are scouring the water by boat and by air to track down a 15-foot great white shark that killed 24-year-old surfer ben linden. just coming out of the water and it was like it was eating a seal. there was just blood everywhere. like massive, massive white shark circling the body. reporter: the country averages just one shark-related death per year. but in the past ten months, all on australia s western coast, five people have been killed by these massive animals. it s become so bad, officials are considering reversing the country s policy of protecting shark habitat. closer to home in new england,