go to the great barrier reef, but don't go to green island as it is for tour. you can try the small diving trip (you can dive or just snorkel) and there are only 30-50 peoples in the ship and will go to the farest area.
You can join a local tour
to see the 鴨咀獸 and wombat.
Join the outer barrier reef cruise
is a must.
From Carins, you can fly or drive to
Alice Spring where you can see
many aboriginal people stay there.
From Alice Spring to Aryers Rock,
you can see how beautiful of outback.
The biggest changing colour rock
in the world,many lizards, wild
kangaroos...etc.