A woman has been critically injured by a shark off a popular Sydney beach. The attack happened Saturday morning at Coogee Beach. Lifeguard Charlie Verco was nearby on his paddleboard and rescued the 35-year-old woman who suffered serious leg and arm injuries. Bystanders, including an off-duty doctor, helped apply tourniquets. She was flown to a hospital in critical condition. The attack involved an 11-foot white shark. It follows three fatal shark attacks on spearfishing divers in Australia since May. Shark attacks have become more common in Australia as the population and water activities increase.