This is Australia we're talking about. Seven Mile Beach, Great Barrier Reef, Great Sandy Desert, Granite Island... Calling things exactly what they are seems like a tradition.
On the Central Coast of NSW (an hour or so north of Sydney) there is a salt water lake, and a town has grown near the lake's entrance to the sea. It's called The Entrance. Parts of the lake are shallow and muddy, and a long jetty (pier) has been built. That town is Long Jetty. Shelly Beach is close by too.