Queensland won't reintroduce drumlines to the Whitsundays area despite a third shark attack in two months.
The spate of attacks has left authorities struggling to explain an apparent escalation in danger in the internationally-renowned vacation destination.
"I believe the message we want to get across is don't swim in Cid Harbour".
Dr Christidis was attacked at Cid Harbour on Monday at the start of a five-day yachting trip with friends and workmates.
Late Monday afternoon, the victim was taking turns with a woman on a paddle board and swimming in the harbour.
Insp O'Connell said Dr Christidis' friends were "extremely distraught".
"There's just a period of time when conditions are such that it maybe causes attacks to be more frequent".
"(There were) at least two doctors on board who were able to render immediate first aid. but his injuries and the reaction to those injuries were so severe that unfortunately he has not survived not long after his arrival in Mackay Base Hospital", Patrol Inspector Steve O'Connell told media this morning.
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"It's definitely harder this one, it hits home a lot more when you can't go home to your family and say that you've saved another life", he said, according to abc.net.au. A 12-year-old tourist, Hannah Papps, was attacked in the same harbor the next day, losing a leg.
Prof Colin Simpfendorfer, from James Cook University, said shark attacks were "extremely rare" in the Whitsundays, but no theories had "so far been supported by real substantial information" to understand the spike in shark activity.
One of the paramedics who responded to the incident described the scene to Channel 9News as "absolutely horrific".
A 46-year-old tourist, Justine Barwick, was attacked on September 19 while swimming from a yacht in Cid Harbor and is recovering.
"The woman has gotten out of the water off the standing paddleboard and the man has gone into the water, shortly thereafter he was the victim of an attack by the shark".
"It's vital that we take the advice of experts and focus on the science to inform our decisions", Mr Furner said.
Tributes flowed for Daniel Christidis on Wednesday as the state government called a meeting for Friday to discuss how to manage sharks in the area, where there have been two other non fatal attacks in recent months.