Queensland State Archives posted a photo:
The Telegraph
11 December 1937
Sandgate Shark-Proof Enclosure Completed
Work on the new shark proof fence at Sandgate was completed to-day and the enclosure is now in use.
Next week a start will be made with the flood lighting for the Christmas and New Year holidays.
The enclosure provides a safe bathing area of twelve and a half acres.
Queensland State Archives, Digital Image ID 2129