Ice colonies

Tonight as the temperature feel these bizarre chains of ice crystals spread across the glass. It is as if a new water-based life form were evolving on my bathroom window. It looks like algae through a microscope, or coral.

More frost

Here is another image of this unusual frost pattern by daylight. I am more interested in the structure of this thing than in photographic integrity, so I have heavily manipulated brightness and contrast to bring out the pattern. Each chain is roughly 3 mm (1/8-inch) wide.



I have posted another image in texture.