abstract appearance backdrop background blended change changing currents dips dusk early evening ebb and flow foam foaming froth light movement ocean pull reflection reflections salt water seaside shades shore sunlight surf surface surfer texture textures tide troughs vast vibrancy vibrant wallpaper water wavelets waves atlantic blue Boston city coast gray kite skyline Australia beach Byron recreation surfing wind dolphin fish jump play swim wave coastline Cornish cornwall England english Great Britain natural nature sand sea action active balance boards enjoyment fresh fun green mobile mobility motion moving on the move outdoors participants participating sail shadows sport strength wetsuits white wind surfing activities child closeup kid people cloudy fitness horizont sky sportsman