Flat water.
.1 Sometimes, the shapes become abruptly less definite, smooth, and the water assumes an oily aspect.
.2 This kind of water figures would be, most likely, perceived by everybody.
Lusenzo 2006-10-01 u 0625.
Lusenzo 2006-10-01 u0625:
Sometimes, the water assumes an oily appearance, in its granular variant, as in the photo below [Lusenzo 071105 u0852].
Lusenzo 2007-11-05 u0852