Authorities are currently investigating a shark bite incident at a South West beach.
It's believed a male surfer was attacked by a suspected white shark at Boat Ramp Surfing Spot near Gnarabup Beach around 8.45am on Monday.
The extent of the surfer's injuries is unclear.
Surf Life Saving WA reported a white shark sighting at Gnarabup Beach in Prevelly about 9am on Monday.
Officers from the Shire of Augusta Margaret River have closed beaches from Gas Bay to Margaret River Mouth.
Last call for donations to support Mandurah's homeless
State Government commits to building $5 million electrical training facility at Rockingham TAFE
McDonald's approved for Dawesville
Wanted man known to frequent Kwinana, Mandurah and Rockingham areas
Mandurah woman completes grueling English Channel swim
Man and child seriously injured in South West crash
Motorists warned to expect delays during Kwinana Freeway upgrades
Driver injured in Serpentine crash
Man and woman wanted for questioning over Lakelands car theft