What causes the appearance of “magic islands” on Saturn’s moon Titan? Only Earth and Titan have liquid on their surfaces. In Titan’s case, the lakes and seas are comprised of ethane and methane that, rather than mixing, settle into layers. One theory is that rain in the form of methane falls on the moon and forms temporary channels that flow into the seas to cause a chemical reaction between the ethane and methane, releasing large quantities of nitrogen bubbles that rise to the surface – and form the “magic islands.” Another possible explanation is that the seasonal temperature rises just enough to release nitrogen from the liquid bodies. In any case, the islands are not topographic features but, rather, arise from chemical processes.