A 60-year-old woman is in serious condition after being bitten by a shark off northeastern Australia and losing several pints of blood.

A spokeswoman for the Department of Community Services says the woman has severe lacerations to her buttocks from the Saturday afternoon attack.

She was being transported by dive boat from Dent Island in the Whitsunday Islands of Queensland state to the Australia mainland where she will be airlifted to a hospital, the spokeswoman said on condition of anonymity because she was not authorized to talk to the media.

No other information was immediately available.

It is the second shark attack in Australia this week. On Thursday, a man was bitten in the leg at a Sydney beach and was treated for minor injuries.