Port Willunga, South Australia

Port Noarlunga Reef Aquatic Reserve is a marine protected area in the Australian state of South Australia located in waters in Gulf St Vincent adjoining the Adelaide metropolitan area and including part of the Onkaparinga River about 28 kilometres (17 mi) south-west of the state capital of Adelaide.As of 2016, the aquatic reserve extents seaward for a distance of about 1.75 kilometres (1.09 miles) from Gulfview Road in the suburb of Christies Beach in the north with its seaward boundary finishing in the south at the shoreline near the west end of Helmsman Terrace in the suburb of Seaford and includes the full extent of the Onkaparinga River from its mouth to the bridge on the South Road in the suburbs of Noarlunga Downs and Seaford Meadows.The portion of the aquatic reserve located within Gulf St Vincent includes two reef systems that are exposed at low tide - the Horseshoe Reef located off the coast at Christies Beach and the Port Noarlunga Reef located off the coast at Port Noarlunga. The Port Noarlunga Reef is connected to the shore by a jetty.The aquatic reserve was declared on 30 November 1971 to protect “reef organisms from exploitation and for the conservation of the estuary and swamps of the lower Onkaparinga River, for the purposes of recreation and education.”The aquatic reserve is classified as an IUCN Category VI protected area.

Aldinga is a suburb of Adelaide in South Australia located about 45 kilometres (28 miles) south of the Adelaide city centre in the City of Onkaparinga. it is a small suburb (population around 573 in 2016), about a kilometre east of the edge of the larger suburb of Aldinga Beach, and about 3 km (1.9 mi) from the beachfront.

Aldinga Reef Aquatic Reserve is a marine protected area in the Australian state of South Australia located in waters adjoining the east coast of Gulf St Vincent including land within the intertidal zone in the suburbs of Aldinga Beach and Port Willunga about 40 kilometres (25 mi) south of the state capital of Adelaide.It was declared on 30 November 1971 to protect ‘aquatic plants and animals associated with the large intertidal limestone reef and the spectacular precipitous underwater cliff known as the ‘drop-off’ and the surrounding sandy substrate for the purposes of education and recreation’. ‘Fishing and collecting or removing any marine organism is prohibited’, however the following activities are permitted - use of boats, swimming, snorkelling, scuba diving and walking on intertidal reef exposed at low water. The reserve extends seaward a distance of about 2 kilometres (1.2 miles) around a headland named Snapper Point from Thomas Street, Aldinga Beach in the south and Seaborne Avenue, Port Willunga in the north.Since 2012, it has been located within the boundaries of a “sanctuary zone” within the Encounter Marine Park.The aquatic reserve is classified as an IUCN Category II protected area.

Baudin was an electoral district of the House of Assembly in the Australian state of South Australia from 1977 to 1993. It was in the southern suburbs of Adelaide. In 1977, the polling places were: Christie Downs, Christies Beach, Hackham, Hackham East, Hallett Cove, Moana, Noarlunga, O'Sullivan Beach, Port Noarlunga and Seaford.Most of the suburbs went to the newly created seat of Kaurna at the 1993 election.

Kaurna is a single-member electoral district for the South Australian House of Assembly. Named after the Kaurna aboriginal tribe which originally inhabited the Adelaide plains, it is a 44.7 km² semi-urban electorate on Adelaide's far-southern beaches, taking in the suburbs of Hackham, Huntfield Heights, Maslin Beach, Moana, Noarlunga Downs, Old Noarlunga, Port Noarlunga South, Seaford, Seaford Heights, Seaford Meadows and Seaford Rise, as well as part of Onkaparinga Hills. It is one of two state districts named after South Australia's indigenous people (the other being the electoral district of Narungga).

Aldinga Beach is an outer southern suburb of Adelaide, South Australia. It lies within the City of Onkaparinga and has the postcode 5173. At the 2016 census, Aldinga Beach had a population of 10,557. It lies about a kilometre west of the smaller suburb of Aldinga. The beach is a well-known spot for surfing, swimming, scuba diving, and snorkelling during the summer months. It overlooks an aquatic reserve which has been created to safeguard a unique reef formation.The Silver Sands beach and holiday area lies just south of Aldinga Beach.

Aldinga Scrub Conservation Park is a protected area in the Australian state of South Australia located in the suburb of Aldinga Beach about 46 kilometres (29 miles) south by west of the state capital of Adelaide.

Maslin Beach is a southern coastal suburb of Adelaide, South Australia. It is located in the City of Onkaparinga. The name refers to the town of Maslin Beach, the beach after which it was named and the suburb which contains both. In this article, the name refers to the suburb, unless stated otherwise. Red Ochre Cove lies south of Ochre Point, which separates Maslin Beach from Moana Beach to the north.

Aldinga Airfield (ICAO:YADG) is a small, uncontrolled regional airfield located in Aldinga, South Australia. The airfield serves as a regional port and is privately owned and maintained.

Tatachilla is a semi-rural suburb of Adelaide, South Australia. It lies within the City of Onkaparinga. It is the location of the Tatachilla Lutheran College.