The two continents located entirely in the Southern Hemisphere are Australia and Antarctica. Australia is the only continent that is also a country, known for its diverse ecosystems, unique wildlife, and significant urban centers. Antarctica, primarily covered by ice, is the least inhabited continent, dedicated mostly to scientific research and exploration. Both continents have distinct geographical features, climates, and biodiversity that reflect their locations in the Southern Hemisphere. Their positions influence global weather patterns and ocean currents, playing crucial roles in climate studies. Together, they underscore the ecological significance of the Southern Hemisphere.