The purpose of this study was to analyze the characteristics of picture books about 'Noah's ark' with respect to the forms and contents. Totally 22 books were selected according to the criteria for good bible picture books. Those books presented a broad variety of genre, format, artistic techniques, and styles of portraying the characters. There were a wordless picture book, an alphabet book, a counting book, folk tale picture books, fantasy picture books, as well as regular storybooks. Volumes included in bible story series and functional format like pop-up or flap books were found. The illustrations were varied from paintings in watercolors or oils to etchings, engravings, shadow representations, clay works, computer graphics, collage and so on. The description of characters was made somewhere between realism and cartoon. The books were classified into 3 types by the degree of filling gaps in the story. The first group of picture books stayed close to the original text of the Bible. In the second group, the authors added contents about setting, characters, or events creatively. The last group of books were thoroughly reconstituted by changing viewpoint or genre and deriving only the core ideas of Noah's story.