VENICE, Fla. - We're hearing the scary new details after an alligator bit down on a Florida man's head!"But it just happened so fast – there’s nothing I could have done to defend myself."Jeffrey Heim says he was free diving for fossilized shark teeth near Venice and when he came up for air, that's when the gator attacked. RELATED: 'Hangry' alligator chases people through Wendy's parking lot in FloridaSomehow, he says, the gator lost interest in him and he was able to make it back to shore."It’s very scary when you ask someone, ‘am I going to be ok?’ and they hesitate.