I wouldn't say it's energy or anything but I can definitely see it and I've tried to figure it out for ages.
I've had opthamologists tell me that it's quite possibly bacteria or something in my eyes, or on the surface of my eyes (I'm not sure where) movign
around and they could also potentially be refracting light.
I know some people have said it's grey, but I don't know if I could personally agree with that. For me it's mostly grey but I get the occasional
sense of rainbow colour from the edges of the moving static particles.
It's hard to describe.
I've always assumed it was something wrong with my eyes, or with the visual processing areas of my brain or something.
To be honest it annoys me greatly because I see it easier looking at white or solid-coloured bright paper. I also see it when I'm looking at the sky
or bright scenes and it drives me nuts, because I just want to look at a lovely view or the clouds and I feel that it gets in the way.
I'll keep reading to see what others have said about it, I've only read page 1 at the time of writing. I don't think it's supernatural, but
that'd be fun wouldn't it?