THE terrifying moment a drowning woman was saved by off-duty lifeguards at Sydney’s Bronte Beach was captured by nearby photographers.

Dramatic images capture the rescue from beginning to end, from the moment the female swimmer begins to get crushed by the dangerous waves and soon realises she is in serious trouble.

Thankfully, surf lifesavers Andrew Reid and Troy Stewart had arrived to begin their shift at 7am on Thursday and spotted the struggling swimmer in the surf.

The woman, a Sydneysider her rescuers identified only as ‘Susy’, was throwing up her hands in the air in an attempt to alert onlookers for help.

Getty photographer Jenny Evans — who captured an incredible collection of pictures of the dramatic rescue — told news.com.au she was down at the beach trying to catch shots of the surf and whales like she does every morning.

She said it was a rough morning on the water, even by Bronte’s standards.

“I was trying to get some shots of the big surf, but then I heard a loud scream,” she said.

She knew something wasn’t right when she scanned the beach to see a young woman being swept out by a dangerously strong current.

“It was so frightening because, at first, I thought it was a child and I thought ‘what should I do?” she said.

Jenny said the waves were “insane” and ‘Susy’ was the only person swimming. Worryingly, the distressed swimmer was in a section of the beach, near the swimming pool, which is usually calm and used by children.

“Everyone acted really quickly when they heard her and they started screaming for help,” she said.

“She managed to get on her feet, but then she was swept away again.

“It was so distressing to see her go under. There was a moment when I thought ‘she’s gone’. “She was so lucky there were lifeguards there because nobody can swim in that kind of water.”

Subscribe to news.com.au’s From The Newsroom podcast through iTunes

One of the lifeguards involved in the rescue said the conditions where atrocious.

“I had just walked in at 6.55am and a fellow lifeguard turned up because we start at 7am,” Mr Reid told the Daily Mail Australia.

“We were actually just looking out and checking the conditions to see how we would set up the beach and a massive set rolled in and I actually joked I wouldn’t want to be out in that today.”

In the photos, Mr Stewart can be seen thrashing through the water to reach the woman, who was screaming for help in between waves. It is thought she was taking an early morning swim and got swept out too far from the shore.

The heart-stopping images show Mr Stewart reach the flailing woman as she begins to sink below the surface of the water.

“I’ve seen a lot of people drown and I can say I think she was going under for the last time,” his colleague told the publication.

“But then Troy got to her and pulled her up, it was amazing to see.”

Mr Reid later explained that his fellow lifeguard used the strong rip to get to the woman as quickly as possible, before assisting her back to the safety of the shore on the front of his paddle board.

At the same moment, another rescue was going on nearby; a male swimmer, who had bravely tried to reach the drowning woman, soon needed rescuing himself.

Bondi Rescue lifeguard Anthony Carroll pulled the man from the water before turning back for the female swimmer to see if he could help his colleagues.

Another guard, Wally Eggleton, was also on hand to assist in the woman’s rescue.

Witnesses also helped to pull her out of the water after she was finally ashore.

Mr Reid added that the woman is a “very lucky lady” and was extremely grateful to the lifeguards for saving her life.

The woman was reportedly heard saying “thank you so much” as she was carried up the beach for further medical attention.

“She had two of the country’s best surf swimmers at the beach this morning, Troy Stewart and Wally Eggleton,” he added.

Suzy was taken to hospital due to possible salt water remaining in her lungs, as reported by The Australian. Known as “secondary drowning”, it can cause sufferers to drown in their sleep if not properly cleared.

The Bureau of Meteorology has issued a surf warning as enormous waves continue to hit the NSW coast. The hazardous conditions are expected to render many coastal activities such as rock fishing, boating, and swimming too dangerous.