It is a type of mirage phenomenon in which the silhouette of the horizon and the setting sun merging on a cold winter evening looks like a daruma doll, and can be seen in Sukumo Bay from mid-November to late February.
In addition, this phenomenon can be seen about 20 times during the winter, and only about 10 times out of that, the perfect "Dharma" can be seen. It is also called the "lucky sunset" because it is rarely seen as it only appears for a short time before the sun sets over the sea.