Science Video Friday: The fastest living thing on the planet

This one threw me for a loop. I figured it would be something small, but really? Huh, how interesting.

I can't embed this one onto the page, unfortunately, so here's the link for the video. It's a clip from the BBC program Richard Hammond's Invisible Worlds, which I haven't seen before, but it looks like I probably should check it out.

I don't want to ruin the surprise of the video, so I'll just leave things at that.