Dense patterns made by sand bubbler crabs at Kewarra Beach north of Cairns. Source: John Brock If you’re lucky enough to get down to the beach this summer, you’ll probably notice evidence of a ...

Primary dunes are composed of sand blown directly from the beach face (active beach), whereas secondary dunes develop following the subsequent modification of primary dunes. Davies (1980 ...

Research over the last decade or more shows the patterns are far more complicated ... The size of the grains of sand, the ...