The only continent that is also a country is Australia. Geographically, Australia is classified as both a continent and a sovereign nation. It is the smallest continent and is often referred to as an island continent due to its size and isolation. The country of Australia encompasses the mainland of the continent along with the island of Tasmania and numerous smaller islands. Australia is known for its diverse ecosystems, ranging from deserts to tropical rainforests, and it boasts a unique wildlife population, making it a fascinating region both geographically and culturally.