caption: The image shows a page from a book with a variety of different types of shells, including various types of marine invertebrates. The page is filled with intricate drawings of the shells, each with its own unique shape and size. The shells range from small, oval-shaped shells to larger, more elongated shells, and some of them have intricate patterns and designs. The colors range from light to dark shades of brown and white, giving the page a unique and interesting look.