Kenneth Starks, 63, of Manse Gardens, Strachur, Argyll and Bute, yesterday pleaded not guilty to a total of 15 charges alleged to have taken place between March and September last year.
He denied four charges of sexually assaulting four youngsters by swimming close to groups and touching them on the buttocks or stomach.
Other charges of breach of the peace include conducting himself in a disorderly manner by changing direction and swimming towards children, following some into the toilets and standing beside a group at urinals, and in one case avoiding and hiding from staff members.
Trial has been set for March.