abstract blue nature ocean reflection rock rocks saavem sea seaweed sun surface texture water wave waves calm clouds horizon lake mirror sky background color colour cool cooling edge lakeside light lighting mirrored natural-environment natural-landscape nature-reserve outdoors outside park peaceful perspectives placid pond protection public reeds reflecting reflections restful ripples rippling shade shadows sunlight sunshine surfaces textures tranquil tranquility trees vegetation water's-edge autumn serene silence silent summer wiev green meteorology ripple wheather wind dew drop droplet drops fresh glass illustration liquid rain shiny transparent wet