Spencer Gulf

The Spencer Gulf is the westernmost of two large inlets on the southern coast of Australia, in the state of South Australia, facing the Great Australian Bight. The Gulf is 322 km (200 mi) long and 129 km (80 mi) wide at its mouth. The western shore of the Gulf is the Eyre Peninsula, while the eastern side is the Yorke Peninsula, which separates it from the smaller Gulf St Vincent. Its entrance was defined by Matthew Flinders as a line from Cape Catastrophe on Eyre Peninsula to Cape Spencer on Yorke Peninsula.

The largest towns on the gulf are Port Lincoln, Whyalla, Port Pirie, and Port Augusta. Smaller towns on the gulf include Tumby Bay, Port Neill, Arno Bay, Cowell, Port Germein, Port Broughton, Wallaroo, Port Hughes and Port Victoria.

The gulf was named Spencer's Gulph by Flinders on 20 March 1802, after George John Spencer, the 2nd Earl Spencer (an ancestor of Diana, Princess of Wales). Visiting at roughly the same time as Flinders, Nicholas Baudin named the area Golfe Bonaparte. While other names bestowed by Baudin persisted (like Fleurieu Peninsula), Spencer Gulf became the official name.

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