How did this art come to be so popular? It is because the works of this art are made with just peeling one whole tangerine, without adding anything or removing any part at all. Just as Japanese Origami art is made with the rule of folding one square paper, this art is also made with the rule of peeling one whole tangerine.
Therefore, even the tangerine peel artist himself cannot make any shape he likes. Each designed shape is an inevitable shape to make a whole tangerine again.
This art can be done with citrus fruit such as grapefruit or oranges. You can even do it with avocados or melons if you wish. 
This art has something common with Goode projection of the world map, and it is a very intelligent type of art.