It's difficult sometimes painting outside, not really the materials, but capturing any image that has the tide coming in and out.
Bailey Island Bridge in Harpswell,Me. This was a place with a bridge made of granite slabs. Fall now in full swing in Maine casting thousands of colors in the tree line. The tide as it lowered it revealed a golden rod colored sea weed covering the tops of the rocks near the channel between Orr's Island and Baileys Island.