The Fremantle Ports Swim Thru at South Beach, Fremantle, WA was the first swim open water swim event in Western Australia, dating back to 1922.
The event is organised by the Fremantle Masters and is a part of the WOW Swim Series.
Swimmers can choose from three swim distances; a 250m, 1.6km & 3.5km ocean swim in an around-the-buoys course format.