Rottnest Island - Reminds me of the Hebrides. No cars allowed, only bikes.
We also saw one Quokka, which is a small marsupiel. It wasn't doing anything, being too hot to move and it seemed to be nursing a joey. The island was named by a Dutch explorer who saw Quokka and thought they were rats. As if I would be there if there were RATS!
Went snorkelling, saw a few fish and lots of coral. When we returned on the ferry that evening, overheard two people talking about the rays and dolphins they had seen.
Will have to go back and have another look.