Michael J. Sullivan was windsurfing when attacked. This is the "first verified attack on a windsurfer by a white shark."
Source: McCosker, J.E. and R.N. Lea. 2006. White Shark Attacks Upon Humans in California and Oregon, 1993-2003. Proceedings of the California Academy of Sciences 57(17):479-501. (230)

Victim was a breathold abalone diver. Victim was attcked when leaning against his kayak.
Source: McCosker, J.E. and R.N. Lea. 2006. White Shark Attacks Upon Humans in California and Oregon, 1993-2003. Proceedings of the California Academy of Sciences 57(17):479-501. (230)