caption: The image shows a large conch shell on a gray background, with a scale and a piece of paper with text on it placed on the surface. The shell is a light brown color with a conical shape and a glossy finish. It has a spiral pattern of ridges and grooves along its surface, and a small indentation in the center. The scale is a standard ruler with a black and white color scheme, and the paper has text written on it in black ink.