caption: The image shows a page from a book with a variety of shells on it. The page is filled with different types of shells, ranging from small, oval-shaped shells to larger, more robust shells. The shells are arranged in a neat pattern, with some overlapping each other. The colors of the shells range from light brown to dark brown, and some have a glossy sheen. The background of the page is a light blue, and the text on the page reads "shells".