Cape Town - Four South African swimmers picked up medals at day one of the Mare Nostrum in France on Wednesday evening.
The South African medallist occupants included Olympian winners Chad le Clos, Cameron van der Burgh and Myles Brown.
Le Clos won the 100m butterfly with a time of 51.56 seconds.
Cameron van der Burgh came second behind Brazilian Felipe Franca da Silver in the 100m breaststroke - a race where he holds the Olympian record - with a time of 1:00.26.
According to SASCOC, Van der Burgh has been experiencing some health problems in the last leg of the series.
He tweeted after Wednesday night’s silver position that the he is getting better and is nearly "back to full heath".
Brown had the busiest day on day one of the Mare Nostrum as he claimed silver in the 200m freestyle and 400m freestyle final. The South African swimmer finished second in the 400m with 3:48.82 as Russia’s Aleksandr Krasnykh won in 3:49.96.
In the 200m final later that evening, Brown came in at 1:47.62 behind France's Yannick Agnel, who touched in at 1:47.28.
Other South Africans who participated included Doug Erasmus, who missed out on a podium by 0.01 seconds in the men's 50m final and Tatjana Schoenmaker who finished fifth in the women's 100m breaststroke.
The Mare Nostrum Canet finishes on Thursday (June 9) before moving to Barcelona starting on Saturday (June 11).