Great Australian Bight Marine National Park

Great Australian Bight Marine National Park is a marine protected area in the Australian state of South Australia located 918 km (570 mi) west of the state capital of Adelaide. It consists of two sections occupying the ocean immediately adjoining the coastline up to a distance of 3 nautical miles (5.6 km; 3.5 mi) and extending from the Western Australia border in the west to a place known as the Tchalingaby Sandhills in the east.

Source: Wikipedia — Great Australian Bight Marine National Park (CC BY-SA 4.0)