Welcome! I agree about seeing them moving! There are things I look at under the scope that "could" be a parasite......or not. But the movement really helps! I wonder if that guy has a video for the "other," lesser seen parasites that he mentioned at the first part of the video. And I wish that all videos and pictures of parasites would tell you what power you were viewing -- that would be so helpful to know so you'd know how big [or small] to expect them to be.