The bear in the apocalypse is walking on the surfaceThe bear in the apocalypse is walking on the surface
A floating flock of dolphins above the surface of the waterA floating flock of dolphins above the surface of the water
The surface of the reservoir in the mountains daytime color photoThe surface of the reservoir in the mountains daytime color photo
The surface of the lake against the background of a snow-covered forestThe surface of the lake against the background of a snow-covered forest
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..