A battle over a lobster diving spot off the Florida coast allegedly escalated into an underwater nightmare after a man was accused of shutting off another diver’s air supply, a confrontation that landed him behind bars on an attempted murder charge. 4 Michael Joseph Simpson was charged with attempted murder for allegedly shutting off another diver’s air supply. WPLG Local 10/YouTube4 Hunter Coffer was diving in the water when his oxygen supply was cut off. WPLG Local 10/YouTubeAuthorities allege Simpson then threatened to turn off the surface-supplied air system providing oxygen to an 18-year-old diver searching for lobsters. WPLG Local 10/YouTubeSrebnick said Simpson was diving from his own boat with friends and his two young children and “never disabled anyone’s diving equipment.”