Ah yes, another rainy day, but that's spring for you. This is Aireys Inlet, about halfway between Lorne and Anglesea along the Great Ocean Road.
Painkalac Creek, seen here, forms a salt lake behind the sand dunes, with the Southern Ocean on the other side of the dunes. I'm standing about 38°27′59.45″S, 144°05′58.21″E (Goggle Maps) and looking southeast.