Sea level, Western Australia, marcotidal barrier, Geography, Coastal landforms, Landforms, Geomorphology, Sand, Estuaries, Beaches, Bodies of water, Sedimentary petrology, Thematic Section: Australian Coastal Geomorphology, 1984–2004, Petrology, Geological facies, Topography, Mud, Coasts, Geology, Earth sciences, Structural geology, Sediments, Altimetry, Phy...