Vastavam web: A diver separated from his boat off the coast of Australia said Sunday he was lucky to be alive after being forced to swim miles back to shore – shadowed by a large tiger shark. The spear fisherman, named in local media as John Craig, was underwater off Western Australia state Friday when his boat was swept away due to engine problems and strong currents. “I put my head in the water to check I was in the same place and suddenly saw a huge four-metre (13-foot) tiger shark approaching within arm’s reach,” Mr Craig told commercial broadcaster Channel Nine. Craig said a sandbar whaler was also closing in on him in the shark-infested waters near Shark Bay as he made the decision to swim back to shore. “I have to admit that at this point I thought I was gone – four nautical miles out to sea with a huge tiger shark following me. I thought this was it, this is how I’m going to die,” he said. “The shark would disappear into the gloom then suddenly reappear behind me, just keeping pace with me behind my fins.” Craig kept his speargun pointed behind him as he embarked on a swim of “pure endurance”, eventually losing the shark. He was later spotted by rescuers on a remote beach.