1/ It is the capital city of Australia:
2/ It is the sea to the Norhteast of Australia:
3/ It is a huge coral reef off the Northeastern coast of Australia:
4/ It is the ocean that borders Australia on the west:
5/ It is the sea to the Southeast of Australia:
6/ It is a state in Southeastern Australia:
7/ It is a state in Northeastern Australia:
8/ It is an Australian state and an island off the Southeastern coast of continental Australia: