A hunt is under way off the coast of Western Australia for a Great White shark which killed a US diver.
George Thomas Wainwright, 32, from Texas, was diving off Rottnest Island near Perth when he was killed.
Fisheries officials have issued a kill order and laid baited hooks in the hope of capturing what is believed to be a 3m (10ft) Great White.
Mr Wainwright is the third person to be killed by a shark along Australia's west coast in recent weeks.
Western Australia Premier Colin Barnett has said he would consider a shark cull, and his government is looking into the possibility of increasing aerial shark patrols.
But scientists have warned against over-reacting.
Barbara Weuringer, marine zoologist and shark researcher at the University of Western Australia, urged against a shark hunt, saying the only way to know which shark attacked is to kill one and open up its stomach.
"It sounds a little bit like taking revenge," she was quoted by AP as saying. "And we're talking about an endangered species.