International pop superstar Katy Perry tours Rottnest Island in WA for a quokka selfie International superstar Katy Perry has been snapped sharing a moment with a cute West Aussie on Rottnest Island.

No trip to WA is complete without an obligatory quokka selfie and international superstar Katy Perry is no exception.

Amphidromous fish—which migrate between freshwater streams and the sea—can move between habitats thanks to ocean currents.