Snow angels

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Can elves make 'snow angels?'

For those of you who aren't familiar with the concept, a snow angel is where one lies on snow-covered ground, then moves one's arms in a flapping motion. The legs are opened and closed repeatly, maximizing and minimizing the distance between the feet. After a few minutes of work, one then gets back up off of the snow. The resultant impression in the snow is that of an angel where the wings were created by the arm-flailing and the skirt/gown by the leg motion.

It's pretty cathartic, especially when done in the cold silence of a moonlit night.

Anyway, in FOTR we learn that when the Fellowship is attempting the Redhorn Pass that Legolas barely makes an impression in the snow with his slipper-covered feet. Is this something that he is actively doing, meaning that he could sink into the snow if he so chose, or is it something innate to elvish kind, where snow angels would exist only in their dreams?