A morning dive off Western Australia turned deadly after a shark fatally attacked a man in waters near Perth, marking the country’s fourth lethal shark incident this year, police said. The victim, a man in his thirties, was attacked by a 4.5-metre shark near Michaelmas Island, southeast of Perth, according to ambulance services and the Western Australian government. Authorities said the incident was reported at about 11.25am local time. Police said the man had been spearfishing when the shark struck. He was brought back to…