Public domain photos

The image shows a close up of a rock on the beach with a lot of holes in it, surrounded by sand. The rock appears to be a sponge, with its ridges and bumps visible. The sand is visible at the bottom of the image, providing a contrast to the rock.

The image shows a close up of a rock on the beach with a lot of holes in it, surrounded by sand. The rock appears to be a sponge, with its ridges and bumps visible. The sand is visible at the bottom of the image, providing a contrast to the rock.Open in library