'Still Swimming' told the John Hughes Hyundai Rumour File the Rottnest channel swim app that tracks swimmers during the race, was still showing the live location of many swimmers across the country and internationally.

The rumour was confirmed when the Rotto Swim board apologised for not turning off the swim GPS tracker.

"It's been happening for four days now so they've done the race on Saturday - and in some cases they're in other parts of the world," Karl said on 6PR Breakfast.