Spiral patterns found in a Sundial seashell (Architectonica perspectiva); it is common in the Indo-Pacific Asia and around India...

Sundial Seashell in black and white

Spiral patterns found in a Sundial seashell (Architectonica perspectiva); it is common in the Indo-Pacific Asia and around India; converted to black and white.

Image #1584BW1. Photo © copyright by Mark Windom.