This beachside snap of a young couple at an engagement party ended up saving the life of a total stranger who was drowning in the waves behind them.
Jackson Parr posed for the snap with girlfriend Madison McDonald as the pair celebrated his cousin Harrison Day's engagement on Saturday.
But it wasn't until he glanced down at the picture that he heard chilling screams coming from beyond the shore at Austinmer Beach, 70km south of Sydney, Australia.
Parr sprinted towards the surf and past a woman yelling that her partner was drowning out at sea.
Diving into the waves, Parr then swam for five minutes before reaching David Pelman, who had been caught in a rip.