Colleagues of an abalone diver who was taken by two great white sharks off South Australia's Eyre Peninsula say they are shocked by the attack.
Aircraft and boats are searching for the body of diver Peter Clarkson, who was stalked and attacked as he surfaced from a dive near Coffin Bay at the peninsula's southern tip.
The skipper of the abalone boat witnessed the attack and the police say he is suffering from significant shock, the ABC reports.
