"Before 10:00 a 27-year-old local male surfing at Cinsta East was bitten on the lower right leg and upper left arm by an unknown species of shark," Craig Lambinon said.
A local ambulance service responded to the scene and transported the surfer, who was in a stable condition, to hospital.
A sharks committee would carry out an investigation to determine the species and size of the shark involved in the attack. This primarily involves assessing the tooth marks found on the victim, Lambinon said.
"The NSRI is urging people in that area to be aware of incident and to exercise caution," he said.
- Were you there? Send us your eyewitness accounts and photos