The Bridgewater bioregion is largely captured within the Discovery Bay Coastal Park. It extends from the shallow Glenelg estuary in the north-west down to the Bridgewater lakes in the south east. Outside of the Discovery Bay Coastal Park, the landscape has been heavily cleared. The bioregion is characterised by a thin plain of tertiary limestone, dune capped sand ridges with gently sloping sandy terrain and lagoonal systems behind.
Low coastal scrub grows in sheltered positions between sand dunes
Winged Spyridium, a common shrub in sheltered areas along the Bridgewater coastline
Limestone rock sculptures are scattered along the sandy coastline