The Sydney Basin Bioregion is a unique ecological area located in southeastern Australia, primarily encompassing the city of Sydney and its surrounding regions. It features a diverse range of habitats, including coastal heathlands, woodlands, and wetlands, supporting a variety of plant and animal species. The bioregion is characterized by its sandstone geology, which influences the local flora and fauna. This bioregion is part of the larger Australian Bioregions framework, which aims to conserve biodiversity and manage natural resources effectively. The Sydney Basin is home to several national parks, such as Royal National Park and Ku-ring-gai Chase National Park, which protect its rich ecosystems and provide recreational opportunities for residents and visitors.