Spirals, photo by Harold Davis. View this image larger.

I realize that I haven’t blogged this photo composite made by combining photographs of the front and back of Nautilus shells, along with a photo of a Nautilus cross-section.

I placed each of the three photos on a Photoshop layer, carefully positioned the objects in relationship to each other on their separate layers, then blended the three layers together to make the final composite.

Related story: Nautilus on Black.