Weeroona Island is a 77 ha island in the Australian state of South Australia located in Germein Bay, Spencer Gulf between the city of Port Pirie and town of Port Germein. It features the wreck of the York, coastal shacks, sandy beaches and is connected with the mainland by a 300m long causeway spanning mangroves and tidal flats.

The Spencer Gulf is the westernmost and larger of two large inlets on the southern coast of Australia, in the state of South Australia, facing the Great Australian Bight. It spans from the Cape Catastrophe and Eyre Peninsula in the west to Cape Spencer and Yorke Peninsula in the east.