There are a lot of great things in and about Australia. Did you know the island itself is 19 times larger than Sweden? That makes it the sixth biggest country in the world meanwhile it's the smallest continent.
The Barrier-reef is the greatest system of reefs on earth. It's actually “built” by nearly 3000 reefs and 900 islands. The total system is located along the coastline (many kilometres from the shore) in an extent of 2000 kilometres. 1500 different types of fish and 400 different species of coral can be found here.

The largest rock on earth can also be gazed in Australia. It's not a mountain but a monolith. I'm having a hard time understanding exactly what it is, so I'm not going to explain it because I might be wrong. (If you scroll down you find a link in case you want to know more about it.) Anyway the greatest monolith is existing in the northern west of Australia and is called Mount Augustus.
Another monolith called Ayers rock or Uluru lies in the centre of Australia and is a holy place for the aborigines. Yet today it's a place for ceremonies.
Sources:
http://www.nimade.info/varlden/2010/11/Vad-ar-en-monolit.html
http://www.ayersrock.se/
Nice pictures.
SvaraRaderaHow wide is muont Augustus?
Yes, i have planned to go to Australia when I have finished school.
SvaraRaderaWhich fishes can you found in the barrier-reef?
Really cute picture, i love finding nemo
SvaraRaderaThe Australian taipan snake is very poisonous but I dont know which one is the most poinsonous.
Which fish do you think is the most beautiful one, of those who live in the great barrier reef?