Trapped within a bead of water, thousands of tiny worms wiggle in hypnotic synchrony as they stream around the globule’s rim. And at the center of this undulating gyre some of the creatures congregate into a writhing mass, like the pupil of a demonic eye. Learn more: https://www.sciencenews.org/article/vinegar-eels-swim-wiggle-synchronize-nematodes | Science News Magazine