You will find them diving into the waves off City Beach every morning about 7am.
Some of them have been performing this morning ritual for more than 40 years.
One member of the group, now in his 80s, has swum the 1km between the City Beach and Floreat groynes nearly every day.
Former dentist Stephen Whatt, a City Beach resident of 42 years, said the group evolved informally over the years.
‘There are always a lot of laughs,’ he said.
‘Most people know each other by first name but not last.
But if you don’t show up people ask where you’ve been.’
Diana Warnock lives in Perth but has been coming every weekday morning for the last 12 years.
‘I just love it,’ Mrs Warnock said.
‘It takes me 20 minutes to get here and 20 minutes to get home, but I can still be at work by 9 o’clock.
Where else in the world could you live in the CBD and come to the beach each morning?’
Mrs Warnock, a former politician, journalist and current patron of Friends of Perth International Arts Festival, said the ocean had remained tepid all through the current winter.
‘There was one day last week where the air temperature was about six degrees, but it was lovely in the water,’ she said.
Still, the group is looking forward to the return of hot showers when the new surf club building is completed in summer 2015.
– Turn to this week’s Residential for the latest real estate market news for City Beach.