The worm.
When I'm at the beach or laying out in the sun is when I notice it the most. I close my eyes, and usually it's black (duh), but then all of a sudden I see a worm-like figure. If I try to focus right on it, even with my eyes closed, it wanders or disappears. If I don't concentrate on it, it stays. Does anyone know what I'm talking about? ONE other person in my lifetime has acknowledged that he sees "the worm" too. What is it? Is it normal?