Ключевые слова: blue, blue sky, blue sky background, bright, calm, clear sky, clouds, day, early summer, japan, khanmon strait, landmark, landscape, natural landscape, nature, no people, outdoor, refreshing, sea, sea transportation, seashore, shimonoseki city, ship, sky back, strait, summer, summer cloud, summer sky, sunny, sunny sky, tourism, tourist attraction, tourist attractions, transportation, travel, wave, white, wide, yamaguchi, yamaguchi prefecture,