NSW police and surf lifesavers have been praised for their heroic efforts after two rock fishermen drowned but a third survived after being swept off rocks near Port Kembla south of Sydney.

Police said the alarm was raised by members of the public when three men from Lakemba and Wiley Park in western Sydney were washed into the sea on Friday evening near Hill 60 Lookout.

It’s the same spot where three men drowned last month.

Two of the fishermen, aged 38 and 31, died. A 42-year-old man is being treated in Wollongong Hospital for water inhalation and hypothermia.

“The actions of our officers, our surf lifesaving partners, our ambulance officers and the toll helicopter … certainly saved one person’s life,” NSW Police Superintendent Dean Smith told reporters on Saturday.

One of the police officers swam about 100 metres to retrieve a fisherman and police said all three fishermen were supported in the water.

Supt Smith paid tribute to the traffic and highway patrol officer who swam 100 metres to one of the fishermen, saying he was proud of the officer.

“It’s something that doesn’t happen every day,” he said.

Supt Smith said that two other police officers suffered minor injuries when they were hit by a wave while spotting for the rescue helicopter.

Police and surf lifesavers on Saturday again issued warnings about the dangers of rock fishing.

“We want people to be aware of the danger, we want them to be aware of the environment they’re going into,” Supt Smith said.

Surf Lifesaving NSW CEO Steven Pearce said there was a dangerous swell on Friday night and it’s believed none of the men were wearing life jackets or personal devices.

Mr Pearce said that the actions of lifesavers and police was “outstanding.”

“It was an extremely heroic effort … to do CPR on the rock platforms with still waves crashing over the rock platform,” he said.

“It just would have been a scene of havoc.”

NSW Ambulance Inspector Norm Rees urged people to take all safety precautions when taking part in activities around water.

“No words can describe the chaotic scene that paramedic crews and other first responders were faced with,” he said in a statement.

“It was absolutely heartbreaking to respond to a scene where previous lives have been lost despite the warnings.”

Human remains found in search for crocodile victim

In Queensland, human remains have been found during a search for a missing fisherman, as the hunt for a killer crocodile continues.

Police, SES and wildlife officers have been searching for the missing 69-year-old since he went fishing in a creek on Hinchinbrook Island about 3pm on Thursday.

The man was due back after an hour but failed to return and could not be contacted by radio, prompting his wife to call police.

His boat was found on Friday morning damaged and upside down in Gayundah Creek on the southwestern side of the island, located between Cairns and Townsville.

The damage to the boat indicated it was “highly likely” a crocodile was involved, the Department of Environment and Science (DES) said on Friday.

Human remains were found in the area by wildlife officers on Friday night, the DES and Queensland Police confirmed in a statement.

“At this stage, police believe the remains are those of the missing man, however forensic testing will be required to confirm this,” it said.

The search for more remains continues, as does wildlife officers’ hunt for the crocodile believed responsible.

-with AAP