Public domain photos

The image shows a close up of a sea urchin with a hole in it. The urchins are a light brown color and have a spiky texture. The hole in the center of the urchine is clearly visible, and there is some text at the bottom of the image.

The image shows a close up of a sea urchin with a hole in it. The urchins are a light brown color and have a spiky texture. The hole in the center of the urchine is clearly visible, and there is some text at the bottom of the image.Open in library