caption: The image shows a page from a book with a drawing of three different types of sea shells from the 18th century. The shells are arranged in a triangular formation, with the largest shell in the center and two smaller shells on either side. The colors of the shells range from light brown to dark brown, with some having a glossy sheen. The text on the page is written in a cursive font, and the background of the page appears to be a light blue.