 The coastal lagoons are considered critically endangered due to the loss of freshwater flows, local extinction of characteristic submerged plants and subsequent loss of habitat diversity.The Coorong National Park has been recognised by BirdLife International as an Important Bird Area.It has supported the chestnut teal, Australian shelduck, sharp-tailed sandpiper, red-necked stint, banded stilt, red-necked avocet, pied oystercatcher and red-capped plover.