Two sharks were spotted at the beach, north of Mandurah.
UPDATE: Lifeguards have re-opened the beach.
Secret Harbour beach has been closed due to shark sightings this morning.
Two sharks were spotted off shore by the Surf Life Saving WA drone at 7:53am.
They were located around 400 metres from the shore.
Swimmers were evacuated from the water and lifeguards closed the beach until further notice.
#CLOSED Lifeguards have closed #mySecretHarbour due to a shark sighted by the SLSWA drone.
— Surf Life Saving WA (@SLSWA) February 19, 2019