The country not connected to the mainland is Australia. This island continent is surrounded by the Indian Ocean to the west and the Pacific Ocean to the east. Australia is the sixth-largest country in the world by total area, and its geographical isolation has contributed to its unique biodiversity and ecosystems. Its diverse landscapes, ranging from arid deserts to lush rainforests, host a variety of endemic species that are not found anywhere else on the planet, emphasizing the importance of conservation efforts in this region.