The bioregion of the Sutherland Shire is very diverse in flora and fauna. Areas of particular importance include:
Hacking River Catchment -
Sydney's most natural body of landbound salt water. It is the only real waterway feeding into Port Hacking, with the vast majority of the remaining catchment being within national park.
Kurnell Peninsula - Kurnell is the Birthplace of Modern Australia - the site of Captain James Cook's first landing in this country - and the first meeting place of European and Aboriginal cultures. Located on the southern shores of Botany Bay in Sydney's south, is a significant cultural and ecological asset. Also included is a Pictorial History of Kurnell by Daphne F. Salt.
- Towra Point - Towra Point is not only the most significant wetland in the Sydney region, but is also important at a national and international level as well.