Australian biology encompasses the study of the diverse ecosystems and unique species found across the continent. Australia is home to a variety of habitats, including rainforests, deserts, and coral reefs, which support a wide range of flora and fauna. Notable species include the kangaroo, koala, and platypus, many of which are endemic, meaning they are not found anywhere else in the world. The country's isolation has led to the evolution of distinct biological traits among its wildlife. For example, the Great Barrier Reef is the largest coral reef system globally, hosting thousands of marine species. Conservation efforts are crucial to protect Australia's unique biodiversity from threats like habitat loss and climate change.