caption: The image shows a page from a book with a drawing of various types of shells, including a nautilus shell. The page is filled with detailed drawings of the shells, each with its own unique shape and size. The shells are arranged in a symmetrical pattern, with some overlapping each other. The colors range from light to dark shades of brown and have a glossy finish. The text on the page is written in a bold font, adding to the overall aesthetic of the image.