Prime Minister Scott Morrison was unobtrusive when he donned Speedos and swam at the IMB Bank Cook Community Classic carnival day at North Cronulla.
Mr Morrison joined in the one kilometre swim and, while he didn't break any a records, he completed the event with close to 100 other swimmers.
"It's all about participating," he said. "If you have a go, you get a go"
Mr Morrison announced at the Cook Classic gala ball in October he would do the swim, and was true to his word.
But, in contrast to his predecessor Tony Abbott, he managed to largely avoid the cameras by hiding in the throng.
The event was another success for the community fun and fund-raising initiative he started in 2008 as the MP for Cook.
The Bate Bay Battle of the Clubs race was won by Wanda ahead of Cronulla, Elouera and North Cronulla in that order.
Harry Came and Hayley Rowlands won both the 1km and 2km male and female ocean swims.
The Carnival crowd was entertained by Paw Patrol, Ettingshausens dancers and Kirrawee High School band.
A new initiative, sponsored by Sydney Airport, was the Paper Plane Challenge, in which children lined up to beat the PM.
Ronald McDonald turned up to entertain the kids.
Sharks and Southern Districts had a throw the ball competition and Red Cross took part for the first time to encourage blood donation.
IMB Bank offered a their Victor Chang heart check service, while Nova 96.9 helped Sylvania BMW spread the word.
Mr Morrison said it was "great to be back in my local community" for the twelfth Classic.
"The event is still bringing the community together and raising much need funds for the organisations who work so hard to provide help to those less fortunate or for our local sporting clubs," he said.
"We are really proud of what the Classic has achieved, over $1.3 million at the end of this year, and its just getting bigger and bigger each year.
Mr Morrison thanked supporters and organisers.
"This event only happens through the support of our great sponsors who come on board every year and also the countless volunteers who pull it together," he said.
"This is what Australia is all about."
IMB Bank chief executive Rob Ryan CEO said the Classic "once again brought the people of Sutherland Shire together in a wonderful family fun day".
"It was fantastic to see so many people participating in the beach events and giving their time and money to support the many not-for-profit and charity groups that make this community a better place."