caption: The image shows a page from a book with a drawing of various types of sea urchins on it. The page is filled with intricate details of the shells, with each shell having its own unique shape and size. The shells are arranged in a symmetrical pattern, with some overlapping each other, and the colors range from light to dark shades of blue and green. The text on the page is written in a cursive font, adding a touch of elegance to the image.