TWO underground miners, who spent 20 minutes partially underwater last Thursday, are lucky Andrew Waters' birds-eye vision picked up their signals of distress.
Andrew, his wife Jill Waters and their friend Lucy Williams were admiring the picturesque Keppel Bay, from Andrew's 7.62m yacht Freycinet, when he saw a partially submerged jet ski bobbing in the water.
From 500m away, he didn't think much of it at first because he thought the jet ski was a weather buoy.
He then noticed two pairs of arms trying to flag his attention.
He steered his yacht towards the pair and found brothers, he simply knew as, "Harley and Josh" bobbing in the water.
The Melbourne couple, who have been holidaying at their son's Frenchville home for the past two weeks, discovered Harley and Josh had fallen off their two-man jet ski after a hatch came off the back of the engine.
Andrew told The Morning Bulletin one of the young men noticed the hatch come off the jet ski.
He then told his brother to "gun it", Andrew said.
According to Andrew, that's when the jet ski started sinking and they both fell off.
"They looked like they were on the verge of crying when we got to them," Andrew said.
"One of them said to me, 'if you guys had carried on, we would've started crying."
Understandably too: they were about 5.6km off the coast of Keppel Island.
According to Andrew, the pair were heading to Keppel Island for a spot of spearfishing.
Following their misdemeanour, they lost most of their spearfishing equipment, except a pair of flippers.
"One of them said to me, they were going to use the flippers to swim to shore."