Another famous water photographer, Dan Merkel, was hired to shoot this film.
Click Here to learn about Dan.
Above he is shooting Billy Hamilton and Ian Cairns in action.
Hamilton was surfing for Jan Michael Vincent's character and Cairns was the double for Gary Busey.
They're riding prop boards, made for the movie, and no wetsuits, since this was supposed to the early
sixties Malibu.
That camera looks heavy...