The incident occurred within 24 hours of an attack on a Tasmanian woman in the same area.
A girl was in a serious condition and a woman was fighting for her life, Australian authorities said Thursday after two separate shark attacks at an idyllic beach retreat.
However, by pure coincidence, one of her rescuers was an emergency department doctor, whose actions saved her life.
Ms Barwick - who works for Family Based Care in north-west Burnie in northern Tasmania - was pulled out of the water and onto a nearby yacht, which happened to have a doctor on board.
A rescue helicopter was dispatched to the area about 1.45pm.
EARLIER: A CHILD has been bitten by a shark in the Whitsundays in the same location a shark attacked a woman yesterday afternoon.
‘We will be 100 percent’ with storm victims Access improved to Wilmington, a North Carolina port city of 120,000 that was cut off for days by high water. The slow-moving storm has since been downgraded to a tropical depression and moved into the US northeast.
The Whitsunday Islands are popular swimming destinations in Queensland, particularly with tourists who flock in droves during the warmer months.
A RACQ CQ Rescue spokeswoman said the rescue helicopter is en route to Cid Harbour.
The Brisbane Times reports that the woman, 46, suffered significant injuries when she was attacked where she was swimming near a yacht in Cid Harbour, just off Whitsunday Island on Wednesday around 5pm.
Queensland Ambulance confirmed the child sustained a "significant leg injury" and has since been airlifted to Mackay Hospital in a critical but stable condition.
The island where the girl was bitten is a popular tourist site 900 km northwest of the state capital Brisbane.