The body of water south of the Nullarbor Plain is the Great Australian Bight. It is part of the Southern Ocean.
The body of water that lies south of the Nullarbor Plain is the Great Australian Bight. This bight is a large open bay located off the southern coast of Australia, characterized by its rugged cliffs and significant marine biodiversity. It stretches from the headland of Cape Adieu in Western Australia to the eastern part of the Eyre Peninsula in South Australia.
the Nullarbor is located in Central South Australia, south of the Great Victoria Desert. It has surface water but no trees, area 100,000 square miles
South of the Nullarbor Plain is the Great Australian Bight, which abuts the Southern Ocean.
The Nullarbor Plain was once under the ocean and accumulated layers of limestone over millions of years. The limestone caves formed through a combination of chemical weathering and erosion processes, such as the dissolving of limestone by acidic groundwater and the carving out of caverns by flowing water. This resulted in the unique landscape of the Nullarbor Plain being riddled with limestone caves.
You'd need to consult the area's geology map to understand fully, but very simply there must be a bed of impervious & impermeable rock lying below the limestone that actually holds the caves, to keep the cave-forming water up in the limestone's formation.
Australia's largest river, the Murray River, is especially important for South Australia's water supply.
The Great Australian Bight
Neither of these is a plateau.The Great Australian Bight is a water feature on the southern coast of the Australian continent. It is similar to a huge open bay, but it is too large to be called a bay in geographic terms.Directly north of the Great Australian Bight is the Nullarbor Plain, a flat expanse, or plain, about 2000 km in length and covering an area of around 270000 square kilometres, but this is a completely separate landform from the Great Australian Bight.The Gulf of Carpentaria is also not a plain. It is another water feature, Australia's largest gulf.
The Indian Ocean lies to the south and west of Australia.
The Southern Ocean lies South of Australia.
Edward Eyre, born in 1815, was the son of a Yorkshire parson. He came to Australia where he began overlanding sheep and cattle. He aimed to be the first to overland stock from Sydney to the new colony established in South Australia, but lack of water forced him to return to Sydney.Eyre gained important bush skills after he arrived in Australia. He wanted to be the first to cross the continent from south to north, but his discovery of salt lakes prevented him from getting through, as he was unable to find any of the breaks between the lakes. In fact, his maps of the region were drawn to show a huge, horseshoe-shaped salt lake which many regarded as an inland sea. These maps were enough to stop anyone else from trying to cross the continent for a couple of decades.After his attempt to cross from south to north was thwarted, Eyre then turned his attention westwards. Eyre became the first European explorer to travel overland from east to west. Departing from Streaky Bay on the west coast of what is now the Eyre Peninsula, South Australia, he made a long and arduous journey over the Nullarbor Plain to Albany, Western Australia.Accompanying him was his overseer John Baxter, two NSW aboriginal men, Joey and Yarrie, and a Western Australian Aborigine, Wylie. While on the Nullarbor, Joey and Yarrie shot and killed Baxter and ran away with guns and food, leaving Eyre and Wylie to carry on alone.Edward's Eyre's journey across the Nullarbor Plain was particularly dangerous for several reasons:The territory, vegetation and terrain was completely unknown.There was no certainty of food or water beyond what the exploration party could carry.It was unknown what aboriginal tribes lived along the route.As it was, prior to heading west, Eyre was assisted by members of the Anangu tribe who occupied the central South Australian outback. They were invaluable in helping Eyre's party find water in the desert.
There are several bodies of water in Australia, including lakes and rivers. Lake Eyre and Lake Torrens is located in South Australia.