A Brisbane woman has been killed in a shark attack at Amity Point, North Stradbroke Island near Brisbane. She was swimming about 15m (49ft) offshore when she was attacked in water which had become murky and muddy after a recent storm. Police believe that possibly three bull sharks could have attacked the young woman as they are known to be aggressive during mating season. Before you start to worry, let’s put this into perspective: there have been 10 fatal shark attacks in Australian waters in the past five years.