Perth’s most famous beach was temporarily evacuated and closed after a white shark was spotted.
Surf Life Saving WA tweeted that a 5m white shark was sighted from a helicopter about 9.30am on Friday at North Cottesloe Beach.
It was about 300m offshore and tracking east.
The beach was later reopened just after 12pm local time.
A shark warning has also been issued for metropolitan beaches after multiple detections of a tiger shark overnight between Scarborough and Leighton Beaches.
“It is possible that these sightings and detections may increase the likelihood of encountering a shark in this area,” a Shark Smart statement read.
Cottesloe Beach is about halfway between Fremantle and Perth, and is one of WA’s most busy beaches.
There have previously been fatal shark attacks at the beach.
In 2011, Bryn Martin, 64, disappeared while swimming and his damaged Speedos were later found.
Ken Crew was killed by a white shark close to shore in 2000.
Meanwhile, the Shire of Broome has reopened Cable Beach in WA’s north following a shark incident earlier this week.
Sam Heseltine was surfing about 50m offshore when he was bumped on Wednesday morning and his surfboard was bitten.
“There have been no further shark sightings since 8.14am yesterday,” the Department of Fisheries said on Friday.
Fisheries officers will continue patrols on Friday and Saturday.
Mr Heseltine’s close call came two-and-a-half weeks after hotel worker Charles Cernobori, 59, was killed by a bull shark while bodyboarding about 30m from the shore at Cable Beach.