Police have appealed to the community for information after an act of indecency was witnessed at Flynn's beach late last year.
About 1pm on Saturday December 10th, a unknown person observed the act of indecency at the beach, and reported the incident to a Lifeguard.
The alleged offender he left the beach when the Lifeguard approached.
That man was described to police as having a tanned complexion, about 60-years-old and between 160cm and 170cm tall.
He was wearing brief blue swimmers and had white zinc on his face.
Police have appealed for the witness who spoke to the Lifeguard or anyone with information about the incident to come forward and contact Port Macquarie Police Station or Crime Stoppers.