Surprising shark behind Whitsundays attacks


Researchers believe they have identified the type of shark responsible for three attacks - one fatal - that rocked the popular tourist playground of the Whitsundays and say it's not your usual suspects.

Tiger and bull sharks were blamed for three attacks - one fatal - late last year in the popular tourist playground of the Whitsundays.

But The Courier-Mail has been told by sources close to the investigation into the attack that findings suggest the prime suspects may actually have been the notoriously skittish and timid blackspot shark.

The wide-mouth blackspot shark, also known as a whitecheek whaler, only grows a little over 1m, is not renowned as a man-eater and is believed to pose almost no risk to humans except in a feeding frenzy.

The blackspot
The blackspot

State Government officials are yet to publicly detail any analysis of the size and type of the bites on the victims.

But preliminary views indicated the bite marks were too small for the bigger, more aggressive species like tiger, bull or great white sharks.

Both nearly bled to death from leg wounds but were saved in incredible rescues.

Hannah Papps.
Hannah Papps.


Justine Barwick.
Justine Barwick.

Melbourne doctor Daniel Christidis, 33, was killed after he was mauled while paddle boarding with friends off a yacht at the same location six weeks later on November 5.

Mr Christidis sustained lethal bites to his legs and arms and, despite the heroic efforts of his medical friends at the scene, died at Mackay Base Hospital after being airlifted by the RACQ CQ Rescue helicopter. 

His death will go to a coronial inquest.

It marked 26 fatal shark attacks in Australia between 2007 and 2018 and an interim report into the three attacks linked them to the now banned practice of boaties intentionally attracting sharks by throwing food scraps overboard in Cid Harbour.

Leading shark scientist Professor Mike Bennett, of the University of Queensland, said he was one of two experts tasked with identifying the sharks involved in one attack but was unable to comment.

"The matter is with authorities," Prof Bennett said.

Doctor Daniel Christidis died after being mauled by a shark in Cid Harbour six weeks after the other attacks.
Doctor Daniel Christidis died after being mauled by a shark in Cid Harbour six weeks after the other attacks.

Researchers, in a joint state and federal-funded $500,000 tagging program launched in response to the attacks, have just completed the second stage of a study into the prevalence and behaviour of sharks in the Whitsundays.

"The Whitsundays has always been a big black hole in shark data,'' marine biologist Dr Richard Fitzpatrick, of Biopixel, said. "We are now getting some amazing insights into how far animals do range and their behaviour."

Using satellite tags funded by tech baron Bevan Slattery, the movements of tagged tiger, bull and hammerhead sharks can now be tracked live on the Reef Tracks website run by Citizens of the Great Barrier Reef.

One bull shark, named Bevan in honour of Mr Slattery, was tagged in Cid Harbour on June 12 and travelled 1029km in 18 days to Cape York.

Three other tagged tiger sharks have been named after swim star Shayna Jack, Qantas boss Alan Joyce and TV presenter Laura Wells.

Marine biologists tag a tiger shark as part of the research project. Picture: Erica Heller
Marine biologists tag a tiger shark as part of the research project. Picture: Erica Heller

Researchers also found the shark population and prevalence in the Whitsundays was much lower than elsewhere.

"Overall, results show the number of sharks using Cid Harbour at the time of sampling was low," an interim report reads.

Data shows blackspot sharks and spot-tailed sharks were among the most common species of shark in the Whitsundays region, leading to their identification as prime suspects in the Cid Harbour attacks.

Scientists are due to deliver the final report of the shark research project by December.

Cid Harbour, a popular mooring site for up to 100 yachts a night, is still listed as a "Do-Not-Swim" zone.


■ A small species of shark most commonly found in the tropical Indo-West Pacific Ocean

■ Generally grows to less than 1m in length

■ Is not usually considered dangerous to humans

■ Mainly feeds on fish, crustaceans, and squid