The quick response from the friends of a 12-year-old boy critically injured in a shark attack at a Sydney beach saved the boy's life, police say. Emergency services were called to Hermitage Foreshore Walk near Shark Beach at Vaucluse about 4:20pm on Sunday. He sustained critical injuries to both legs and was taken to the Sydney Children's Hospital at Randwick for treatment and was placed in intensive care. Marine Area Command commander Superintendent Joseph McNulty said on Monday "every second c