An Australian attacked by a shark off a deserted beach Saturday is reported to be in a stable condition.

The victim, bleeding from a leg wound, was rushed to the hospital after the attack off Seven Mile Beach at Gerroa, south of Kiama.

"We're in the process of assessing his injuries," a Shoalhaven Hospital spokeswoman said. "He's in a stable condition and in good spirits, considering."

She said the injuries were not life threatening, but it was unclear whether he would require surgery.

The man's family has arrived at the hospital.

A NSW Ambulance service spokesman said an emergency helicopter was initially sent to the scene from Albion Park on the south coast, but it was recalled after a road ambulance arrived and took the man, whose name is unknown, to the hospital.

"He suffered lacerations to the lower leg," the spokesman said. "We believe he was in a stable condition at the time and he may have been helped to shore by fellow surfers."

The beach was not patrolled at the time due to infrequent use over the winter, a Lifesaving NSW spokesman said.

"None of the beaches are open down there at the moment because of the off season," he said.

"I've activated our surf lifesaving team duty officer down there and they can see what they can do and work in with the police to make sure that they maintain some safety in the area."

He said the surf lifesaving helicopter would most likely fly over the remote beach, but he could not say whether warning signs would be erected.

No details of the size and type of shark are available.

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