"I caught a few waves and was paddling back out and I was moving to stand up when I got knocked off my board," said 69-year-old Cleveland "Cleve" Bigelow "It felt like getting hit by a truck while on a bicycle. It was a shock. I thought, 'What was that?'" Bigelow, of Chatham, said he saw the bite marks on his board, got back on, and paddled in to shore as quickly as possible, alerting lifeguards and a nearby surf school. He said he never saw the shark, and was not injured directly by it, but he did hurt his lower legs when he hit the board after the shark bit into it.