The western end of the Coorong lagoon is at the
Murray Mouth near
Hindmarsh Island and the
Sir Richard Peninsula, and it extends about south-east. The national park area includes the Coorong itself, and Younghusband Peninsula which separates the Coorong from
Gulf St Vincent in the
Southern Ocean. The Coorong has been cut off from
Lake Alexandrina by the construction of the
Goolwa Barrages (weirs) from Goolwa to Pelican Point during the late 1930s. The national park was formed in 1967 as a sanctuary for many species of birds, animals and fish. It attracts many migratory species. It provides refuge for these animals during some of Australia's regular droughts. The also supports coastal dune systems, lagoons and coastal vegetation. One of the unique aspects of the Coorong is the interaction of water along its length, with sea water and
Murray River water meeting rainfall and groundwater. The freshwater supports the fauna (animal) of the area while the sea water is the habitat for much of the birdlife. Notable locations within the park include Salt Creek, Policeman's Point, Jack Point, and Woods Well. The waters of the Coorong are a popular venue for recreational and commercial fishers.
Coorong mullet,
mulloway and
bream are the main species. ==Beach==