Australia is a country located in the southern hemisphere, comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. It is the world’s sixth-largest country by total area. Australia is bordered by the Indian Ocean to the west and the Pacific Ocean to the east. The country’s diverse landscapes range from desert to coral reef, and it is known for its unique and diverse plant and animal life, such as kangaroos and the koala. The capital of Australia is Canberra, and the largest city is Sydney. The official language is English, and the currency is the Australian dollar. The population of Australia is around 25 million people.