A Kauai surfer had a close encounter with a shark Sunday.  Twenty-five-year-old Jeff Horton says he was waiting for a wave near Kilauea, when a shark approached and bit his board, knocking him off.  He fell onto the shark, grabbed a fin and began punching with his other hand. He managed to jam a knuckle in the shark's eye and the shark let go of the board and swam off.  Horton then paddled in.