I was photographing in eastern Hokkaidō, Japan this past February. I couldn't help but notice these ice feathers that lined the banks of Lake Kussharo. The attraction was overwhelming and I saw patterns and feather-tipped edges everywhere. I must have captured at least 200 images (that’s a lot for me). My favorite image, the first shot I took- LOL.
I’m pretty sure this is hoarfrost. When I did a search of frost, I found that there are many different types of frost.