Recent orca sightings off Rottnest and a series of whale carcasses washing up on Perth shores have sparked questions about the surge in marine activity.

Press PLAY to hear John Totterdell discuss recent orca sightings off Rottnest

6PR Mornings host Simon Beaumont spoke with John Totterdell from CETREC WA to discuss the sightings.

“With the return of several of the whale populations, there’s a lot more whales around of various species, so we’re going to get a few problems and a few that are lacking good health, so we’re going to see this sort of thing more and more, I think now”, Totterdell said.

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Image: Centre for Whale Research (Western Australia) Inc.