caption: The image shows a close up of a sea urchin on a black background. The urchins are a light brown color and have a smooth, glossy texture. They are arranged in a circular pattern, with the largest one in the center and the smaller ones radiating outward. The edges of the urchine are slightly curved, giving it a unique look. The black background provides a stark contrast to the light brown of the shells, making them stand out even more.