Cottesloe Beach open for business SHARK ALARM: Cottesloe Beach has been closed early today after a 2m shark was seen just 30m from the pylon. COTTESLOE Beach has been reopened after closing for the second time this week after another shark was spotted just 30m from the iconic pylon. Surf Life Saving WA closed the beach about 7.15am after a 2m shark was sighted by lifeguards just west of the pylon but reopened it a short time later, just after 9am. On Wednesday, Cottesloe and Leighton beaches were closed after two separate shark sightings.