A scuba diver became the third fatality from a shark attack in as many weeks . Authorities say the diver was killed by a great shark off the Australian coast . West : Hunting down and killing sharks on suspicion of being responsible is unjustifiable . Shark encounters more likely , as water - based sports become more popular . But he says many more people drown on average off Australian beaches .
A scuba diver became the third fatality from a shark attack in as many weeks . Authorities say the diver was killed by a great shark off the Australian coast . West : Shark encounters more likely , as water - based sports become more popular . But he says many more people drown on average off Australian beaches .