caption: The image shows a page from a book with a variety of different types of shells, including a nautilus shell. The page is filled with intricate details of the shells, such as the ridges and bumps that make up the spiral pattern. The shells are of different sizes and shapes, with some having a smooth, glossy finish and others having a more rounded shape. The colors range from light brown to dark brown, and some have a glossy sheen. The background of the page is a light blue, and the shells are arranged in a symmetrical pattern.