A highly publicized attack took place near the Red Triangle during the winter of 1981. A week before Christmas, Lewis Boren and his friends were surfing at Spanish Bay, just south of Monterey. After lunch, Boren returned to the water alone where he was attacked while on his 5-foot fiberglass surfboard. His board was found the next morning with a large piece missing in the classic shape of a bite mark. The piece was found later and Boren's body was found floating about a half-mile north of the attack site with a similar bite mark. It seems he was floating out to catch the larger waves offshore, his arms outstretched in front of him, when a large GW attacked, cleanly biting through both him and his board. From the bite radius on the corpse and the board, the size of the attacking GW has been estimated at 18-20 feet.
http://greatwhite.org/lo_frame_attack.htm