The night city reflected in the surface of the waterThe night city reflected in the surface of the water
We are in a hurry on sails in the water surface to landWe are in a hurry on sails in the water surface to land
View of the flowing sea surface beyond the edge of the evening horizon, two lonely rocks look at each otherView of the flowing sea surface beyond the edge of the evening horizon, two lonely rocks look at each other
The rays of the setting sun gliding across the water surfaceThe rays of the setting sun gliding across the water surface
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..