beach bunny noun a young female who spends a great deal of time at the beach, surfing or associating with surfers US
— ParadiseofthePacific, p. 27, October 1963
— John M. Kelly, SurfandSea, p. 279, 1965
What to other people is a “pad” is called a “hutch” in surfing circles–most properly if it is the beach bunny’s own apartment[.] — Roger Gordon, Hollywood’sSexualUnderground, p. 144, 1966