Australasia is made up of Australia, New Zealand, New Guinea and Pacific Ocean islands. Australia is the world's sixth-largest country by total area. Given its sheer size and varied climate, there is a wealth of fauna that inhabit Australia. New Zealand is split into the North Island and South Island. The capital of New Zealand is Wellington in the South Island and its largest city is Auckland in the North Island. Before humans arrived, New Zealand was covered in roughly 80% of forest.
New Guinea is in the southwest Pacific Ocean and is the second largest island in the world, after Greenland. Compared to Australia, New Guinea has much more rainfall and a higher active volcanic geology. In spite of this, both New Guinea and Australia have similar animal fauna.