Millimeter-sized “surfers” can self-propel across a vibrating liquid surface, interacting with other surfers to create collective patterns.
https://physics.aps.org/articles/v16/s156
#physicsmagazine #sciencemastodon #physicsnews #sciencejournalism #sciencenews #physics #science #scienceiscool #STEM #fluids #boat #boating #activematter