How do you represent stillness?

The beach at Dunure, Scotland has provided the inspiration for my new colour family and forms part of the inspiration for what I hope will build into a new series. I'm not interested in creating art that represent the rocks, pebbles or rolling waves as nature is itself has limited appeal to me. Instead I want to create fabrics and finished works that embody the calmness, the stillness and the tranquility I felt when I sat on Dunure beach. I grew up near the sea and whilst I couldn't imagine living anywhere other than in a city there are moments when I long to hear nothing but the sea. But what does 'stillness' look like? I think it is linear. And soft. It fades in and out.