Just for kicks, I filmed one of my recent batches that really showed the yeast doing it's thing.
I know... I need to learn to turn the camera. But it still gets the point across.
This was a Bear Republic Red Rocket clone in the big carboy and a parti-gyle Little Rocket in the small carboy.
With all the questions that pop up on here, I thought it might be useful to show video of actual, normal fermentation.