Seth, mum and I found a lot of flatworm species at Eastern Beach. I haven’t focused on trying to identify them: we found so many different types of species and I don’t know enough about flatworms (yet) to know what the key features are. I’ve posted some theories, but aren’t shore.
I think the below two may be Notoplana australis. The colour varies from cream to dark brown.
I suspect all of these are Notoplana australis, the brown flatworm.