"Watermarks" is by Sara Sadri (postdoctoral researcher).
Water can erode rock, carve through cliffs, and sculpt sand. Water moving back and forth on the Atlantic coast created this intricate pattern. As a hydrologist, I am fascinated by the natural phenomena of our beautiful planet. The way water in this picture found its way back to the ocean reminded me of a peacock's tail spreading under the sun or a woman's hair blowing in the wind.