Their size relation to scales used to create something is kinda irrelevant. The scene is out of scale imo. Doesn't look real. The ground scales looks like boulders you'd be weaving in and out of as a person walking. Nothing really showing the large scale with small scale detail. This is all contributing to each other, wave scales, foam scales, rocks, glacier boulders, and than the glaciers themselves and scales used. When coming together they give you the scale relation.
Also as far as the Glaciers. The weird blue lines are very telling that it's fake. These lines IRL are created by thawing water mixing with debris filling cracks and very defined.
In the example uploaded, I'm given a sense of scale by the level of fine detail in the Glacier, and the scale of the water.