From Scarborough to Ocean Reef, a spike in shark detections over the past few months has kept Perth’s northern beaches on alert, prompting Surf Life Saving WA (SLSWA) to issue a formal shark warning following several consecutive sightings.
While the alerts have stirred unease among swimmers and surfers, experts say the increase reflects seasonal patterns, not rising shark aggression.
“Research shows there have been more white sharks detected off Perth during spring and early summer, likely due to environmental factors such as seasonal snapper spawning,” a Department of Primary Industries and Regional Development (DPIRD) spokesperson said.
Tracking the trend
Since 2009, 217 white sharks have been tagged in WA waters — 17 of them this year alone.
DPIRD’s Shark Monitoring Network, made up of 40 receivers along the Perth coast and key regional areas, tracks tagged sharks and sends real-time alerts to authorities and the public through the SharkSmart WA app.
The department says WA’s shark hazard mitigation program is among the most comprehensive in the country, combining tracking technology, aerial patrols, and emergency signage.
A spokesperson said more than 1,800 Beach Emergency Number (BEN) signs have been installed along the WA coastline and the Swan Canning Estuary.
These signs help first responders and the public report shark sightings and coordinate beach closures quickly.
Staying safe at the beach
Surf Life Saving WA General Manager Chris Peck said the organisation’s aerial patrols, which run from September to April, play a crucial role in spotting sharks and warning beachgoers in real time.
“As we head into summer, we’re asking beachgoers to make smart decisions about where and how they recreate at the beach,” Mr Peck said.
“Choose a patrolled beach, swim between the red and yellow flags, and don’t swim alone.”
He said most coastal incidents — including drownings and shark-related emergencies — occur outside patrol hours or in unpatrolled locations.
“It’s the age-old scenario of overestimating your abilities and underestimating the conditions,” he added.
Living with sharks
For many locals, the uptick in alerts has reignited debate about ocean safety versus overreaction.
Both SLSWA and DPIRD stress education over fear, urging the public to use available safety tools and respect marine life.
The SharkSmart WA app, downloaded more than 246,000 times, remains the state’s go-to hub for live shark alerts, weather conditions, and patrol updates.
“Western Australia’s relationship with the ocean runs deep,” the DPIRD spokesperson said.
“Our strategy ensures everyone can enjoy these environments as safely as possible.”
As summer approaches, authorities are reminding coastal visitors to stay informed, follow closures, and report shark sightings immediately to Water Police on 9442 8600.
Because in Perth — where the beach is part of the city’s identity — coexisting with the ocean’s apex predators is less about fear, and more about respect and awareness.
