Newcastle beaches have been closed for a record sixth day in a row with repeated sightings of a great white shark keeping swimmers out of the water.
The five-metre shark, first spotted on Saturday at Merewether Beach, was again seen off Nobbys Beach at about 4.30pm on Wednesday.
Peter Withers, Newcastle Council's Aquatic Services Co-ordinator, who's worked for the council for 37 years, says he's never seen a shark as big as this one in the area.
"We haven't had a big one like this, and certainly haven't had a shark that's been around for five or six days in a row," he told Macquarie Radio on Thursday.
He said patrol teams on jetskis set out at 7.30am on Thursday to look for the shark.
The shark, which has also been sighted by water police at Burwood Beach, seems to be hanging around an area stretching about 12 kilometres.
Mr Withers said all reports show that it's a big shark.
"We've had some sightings up really close with the jetski - and it's certainly longer than the jetski and the sled combined - so it is a big shark," he said.
Adult great white sharks grow to about 6.5 metres long, he said.
Mr Withers said the co-operation from the public has been good since the beaches closed, but admitted some surfers are still willing to risk the waters.
Most summers there are about four or five shark sightings, he said, when the beaches are closed while the shark is herded away by patrols on jetski.
"More times than not we never see the shark again," he said.
Nobbys Beach inspector Paul Bernard told AAP that the shark could bite a person in half.
"You don't get a second chance with these things," he said.
Overcast and warm weather combined with increased marine activity could be responsible for the shark's prolonged presence.
