Is Australia sinking into the ocean?

Australia is not sinking into the ocean. In fact, Australia is slowly rising. The northern part of Australia is rising by about 2 millimeters (0.08 inches) per year, while the southern part of Australia is rising by about 1 millimeter (0.04 inches) per year. This is because Australia is located on the edge of a tectonic plate, and the plate is slowly moving northward.