Public domain photos

The image shows a close up of a small rock on a black surface, with text at the top and bottom of the image. The rock appears to be a sporozoan, a type of sea slug, and the background is slightly blurred.

The image shows a close up of a small rock on a black surface, with text at the top and bottom of the image. The rock appears to be a sporozoan, a type of sea slug, and the background is slightly blurred.Open in library