At sea, objects in the distance may appear to be floating above the horizon.
A Fata Morgana is a complex, rapidly changing form of a superior mirage, an optical phenomenon that is created when light bends as it passes through a layer of air that is warmer than the layer below it.
Made up of several inverted and upright images stacked on top of each other, Fata Morganas appear as warped, often unrecognizable, objects or shapes that seem to float above the horizon.