Western Australia is the biggest state in Australia. It has a cold water reef, Ningaloo, which has a returning Whale Shark population each April-June. You can learn about this vast state and all its wonders here at this site.
This is for expat Aussies living in the States. This lists events that happen in the area and would be a great way to find someone to come into the class and give an interview.
Melbourne, the capital of Victoria, is home to the Australian Open. It takes place in January, when it is summer Down Under. You can learn more about the city and the state at this site.