A man, aged in his 30s, has bodysurfed back to shore after being bitten on the leg by a shark at Gracetown in Western Australia's southwest.
An RAC Rescue Helicopter was sent to the scene after the male surfer was attacked by a shark about 8am on Monday morning.
The man was flown to Royal Perth Hospital by helicopter and is in a stable condition.
A spokeswoman said he was being assessed in the Emergency Department and would be transported to the state trauma unit on Monday afternoon.
A St John Ambulance WA tweet said: "He is conscious and breathing and being treated for leg injuries".
Friends used the leg-rope from the victim's board as a tourniquet and gave him first aid until emergency crews arrived from Margaret River within six minutes.
Sam Robbo, who said he arrived at the scene right after the attack, explained the man was bitten and paddled back to shore.
#BREAKING #SHARKATTACK The patient from the Gracetown incident is a male aged in his 30s. He is conscious and breathing and being treated for leg injuries. RAC Rescue is taking him to RPH, with an ETA of 10:30am.#perthnews #stjohnwa #stjohnalert— St John Ambulance WA (@stjohn_wa) April 16, 2018
The incident happened at Cobblestones, south of Gracetown and Cowaramup, near Margaret River, about three hours south of Perth.
Surf photographer Peter Jovic saw the attack from the beach and said there were only about five people in the water at the time.
"If anyone is familiar with the Mick Fanning moment at Jeffreys Bay a couple of years ago, it was very similar to that, where a shark pretty much popped up and ended up knocking a surfer off his board," Mr Jovic told ABC radio.
"There was a lot more thrashing around after that, it was pretty hard to see what was going on.
"The surfer who was being attacked ended up miraculously body surfing into a little wave and getting pushed in by a local at the same time, who was out there with him, and making it to shore before everyone came to his aid."
Mr Jovic said everyone was "walking around like stunned mullets" after the attack.
It is understood the man has lived in Gracetown for some time, with one friend describing him as "an awesome guy".
Surf Life Saving WA said a four-metre shark and whale carcass were spotted at 10am at Lefthanders.
Beach closures are in place for the Gracetown area, including North Point, Big Rock and Lefthanders.
The Margaret River Pro international surfing competition, which is about 15km away from the attack, was suspended for about one hour, but then resumed at Main Break.
"Surfer and staff safety are top priorities for the World Surf League," a spokeswoman said.
"Further enhanced safety measures, including ski and drone presence, will be added to the event's mitigation protocols."
A spokeswoman for the event said the comeptition wanted to make sure that the surfers were protected.
"We've brought in extra drones and extra jet skis ... everyones go their dedicated jet ski."
Public report unknown sp. shark sighted 08:45hrs 16/04 Cobblestones Surfing Spot, south of Gracetown, Cont— Surf Life Saving WA (@SLSWA) April 16, 2018
Cont - shark sighted 0m offshore , distance offshore unknown Cobblestones Surfing Spot, south of Gracetown.— Surf Life Saving WA (@SLSWA) April 16, 2018
Chris Boyd, 35, was killed at nearby Umbies surf break in 2013.
Nick Edwards, 31, also died after a shark attack while surfing at nearby South Point in 2010.