Scientists have known about microplastics in nature since the 1970s, but lately they are finding these tiny plastics almost everywhere they look – in the air, lakes, rivers, oceans, on land, and even in remote places like Arctic lakes and snow! This article will introduce young audiences to the hidden universe of microplastics, the tools scientists use to analyse them, and how people can do their own experiments to analyse microplastics from a nearby beach.