caption: The image shows a page from a book with a variety of different types of sea urchins, each with its own unique shape and texture. The page is filled with intricate details, from the shells to the intricate patterns and textures of the corals. The colors range from light to dark shades of green, with some of the shells having a glossy sheen. The text on the page is written in a bold font, adding to the overall aesthetic of the image.