00:02Perth's warmer weather is attracting people to the coast.
00:06The recent events mean some of the city's beaches remain closed.
00:10Two weeks ago, Perth father Greg O'Neill was fatally attacked by a shark at Sorrento Beach.
00:17On Thursday, authorities removed a humpback whale from City Beach,
00:21its carcass attracting sharks close to shore.
00:24Sharks are cued in on a molecular level to detect small traces of oils or blood or anything like that
00:31and so they'll be sniffing that and tasting that for weeks to come.
00:35Mr Jenner says sharks follow bluefin tuna and humpback whales during their annual migration south,
00:41from September to December.
00:43This is a time of the year that if you were going to be cautious about being in the water,
00:47this is it, this is the time.
00:49One community swimming group in Cottesloe taking a break from their daily two-kilometre course.
00:55Our numbers will drop off now, understandably.
00:57It's a very emotive issue.
00:59So people have a different relationship with these sort of events about how they manage.
01:04Mr McGurr calling for more investment in shark recognition technology.
01:08We just want to know where the sharks are.
01:10And when we know where the sharks are, we can keep safe.
01:13Cottesloe Beach has remained open, packed with people both in and out of the water.
01:18I'm a bit more cautious now and I try to go wherever there's a shark net, like in Coogee.
01:22No, it's too fresh for me.
01:24It needs to be about 30 degrees before I step foot in the water anyway.
01:28As you can tell, I'm obviously not from here.
01:30So when the weather is nice, we want to make the most of it, they jump in.
01:33With sharks still active in the City Beach area,
01:36the upcoming Surf Lifesaving WA Enduro Championships event has been cancelled.
01:42People urge to take extra care in Perth metropolitan waters.
01:48Bye-bye.
01:48If the camera wants to stop playing, you'll be great to see it.
01:48If the camera's not coming off, you'll be-
01:48I'm not going to be like, both of you.
01:48But it has a lot of people who are in the air.
