Fisheries department officers shot the two tiger sharks, including one estimated to be more than four metres long, after the marine predators were netted in Whitsunday Islands, reports Xinhua news agency.
On Wednesday evening, a shark mauled the woman swimming in the area.
On Thursday, the girl from New Zealand suffered serious leg injuries from a similar attack.
Both victims were hospitalized and had multiple blood transfusions and emergency surgery to stabilize them.
The attacks prompted Australian authorities to advise tourists against swimming in the area.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
