A person has reportedly suffered serious injuries after being bitten by a shark at a remote beach on South Australia's Yorke Peninsula.
Police responded to a report of a shark attack off Ethel Beach near Innes National Park at 1.30pm on Thursday.
Ambulance crews were rushing to the difficult-to-access beach, situated at the bottom of a large cliff.
The attack comes after a spate of serious shark bites in recent months, including the fatal attack of 55-year-old Tod Gendle at Granites Beach on the state's West Coast in October.
His was the second shark death this year after 46-year-old teacher Simon Baccanello disappeared without a trace in May while surfing at Walkers Rock Beach, about 365km west of Adelaide.