The purity of the sea is like the sky is blue in summer natureThe purity of the sea is like the sky is blue in summer nature
A lonely boat on the blue surface of the sea under white cloudsA lonely boat on the blue surface of the sea under white clouds
Calm sea water at the rocky shore under the blue skyCalm sea water at the rocky shore under the blue sky
The water surface of the sea in turquoise-blue colorsThe water surface of the sea in turquoise-blue colors