The Whyalla area has a large number of artificial reefs, all affected by the strong currents and silt that is a feature of the area. An extensive artificial reef, consisting of car bodies, old boilers, gantries, tyre pyramids, washing machines, stoves and refrigerators.

Most other reefs consist of the usual series of tyre pyramids. It can have thick growths of sponges, ascidians and soft coral and is a haven for schools of whiting, snapper and many other fish.