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, including the various shapes and sizes of the shells, as well as text describing the different types of shells. The shells are arranged in a circular pattern, with some overlapping each other, and the colors range from light to dark shades of blue and green. The text is written in a bold font and is surrounded by a thin black border.