Australia and New Zealand are two countries in the South Pacific Ocean. New Zealand is an island chain. Australia is the world's smallest and flattest continent.
Oceania is made up of 25 countries in the Pacific Ocean, including island nations such as Macao, Samoa, and Vanuatu.
Tonga, or Kingdom of Tonga, an island country in the South Pacific, about 1,200 miles (1,900 km) north-northeast of New Zealand.
Papua New Guinea, an island country in the South Pacific just north of Australia.
Australia, or Commonwealth of Australia, a country occupying its own continent in the Southern Hemisphere.