I've just come back from summer vacation in Extremadura. Due to the sheer heat of the summer, much of our activity there is restricted to the evening and night time. Most days we would go for a walk to a local lagoon to have a drink at the bar there. A few times I took my camera, but there was one evening when the ducks were swimming back and forth and the water seemed to have such a beautiful texture, with complex ripple interactions. I took many photographs.