Nah, floaters can be kinda clear. Mine look like circles with stuff in them (they look kinda like diagrams of a cell, or maybe a simple diagram of an atom—they have kinda a dot in the middle) and some of those same circles connected in long, curly strings with tube-like (?) structures.

They do indeed “float”. If I move my eyes they move with them, then have momentum when I stop moving my eyes. They’re way more visible against static, bright backgrounds (like blue sky) but I can see them in indoor lighting, too.

I’ve had them since I was very young. The white flashes you’re referring to I’ve only noticed recently, and are very different things. They do require a bright blue sky for me to see them.

Yup, when I get floaters, I look up and then back down very quickly and then they end up somewhere I can't see them for a while.

They do look a whole lot like things we saw in biology class under microscope.