When Perth fisherman Brendan McGregor headed out for an afternoon of fishing with a mate on Saturday, he had expected a quiet trip and hopefully a few King George Whiting.
However it wasn't long before the men were joined by two rather large unexpected visitors.
!["Came across these beasts yesterday arvo on the way back in from a fish. The white was as long and as wide as my v17r ...](http://web.archive.org./web/20170710045855im_/https://www.fairfaxstatic.com.au/content/dam/images/g/x/7/l/i/8/image.related.articleLeadwide.620x349.gx7ljs.png/1499572211434.jpg)
Mr McGregor had been returning to the Mindarie Marina with his friend Jason Garratt when he spotted a whale carcass drifting nearly one mile out from Alkimos Beach.
"Jason is new to the boating and fishing scene so I headed over to it so he could have a look, and [I thought] that there might be some sharks hanging around it," Mr McGregor said.
And the pair weren't disappointed.
Posted by Rippa Gauges on Saturday, 8 July 2017
"I spotted the fin of the white pointer first, and then drove around the other side of the carcass just as it came in to take a big chunk out," he said.
"A tiger shark then surfaced and started ripping chunks off as well, and although the tiger shark was big, it looked tiny next to the white pointer."
Mr McGregor said the great white was easily bigger than his 5.2 metre boat, and estimated the animal to be around six metres long, and around 1.5 metres wide.
"We circled the whale for about half an hour watching them feed on it and it was quite spooky," he said.
"The white pointer would bite a chunk out, and then just disappear for five minutes.
"We'd have no idea where it was."
Mr McGregor was able to snap some incredible vision of the sharks feasting on the whale carcass, and posted the footage to his fishing business page RIPPA Gauges.
"We got close enough that we could reach out and touch [them] if we were stupid enough!" he said.
Following Mr McGregor's experience, Surf Life Saving WA issued a warning and urged divers and boaties to avoid the area.
The shark alert is ongoing as Fisheries expressed concerns the carcass could attract more sharks to the Ocean Reef and Alkimos area over the next few days.
Public report whale carcass 5.4km off-shore, north-west of Mindarie. School of sharks feeding on carcass.
— Surf Life Saving WA (@SLSWA) July 9, 2017