Three people posed for a photo in this spa, so Teena Fleetwood was understandably spooked when she noticed a fourth figure leaning in close with an arm around her.
Mrs Fleetwood, along with her husband, her daughter and her daughter's husband were celebrating her daughter's upcoming 21st birthday when her husband snapped this "ghost" at the Lagoon 1770 resort at Agnes Water last Friday.
"Later we were looking through the photos and noticed a ghostly figure with an arm around my shoulder," she said.
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"We were all astounded with the photo. We never felt a presence with us in the spa.
"[We were] wondering who it could be, or is it a trick of the steam in the spa and the evening lighting?"
Ms Fleetwood returned to the spa with her husband the following night to take more photos, but could not recreate the phenomenon.
The Gladstone region is no stranger to paranormal activity, with multiple sightings of a ghostly figure on Gladstone Benaraby Rd.