The Lilting Loons of Botsberg beloved for their soothing songs have gone missing, and the pond they call home has been replaced by trash. Thanks to Digit's shrink ray, the CyberSquad shrink down, travel through the water pipes and discover that the source of the pollution is coming from different places miles apart! Will their little actions lead to big solutions? Topics: Non-point Source Water Pollution; Mapping; Ratios; Measuring Distances Big Idea: When pollution comes from many different places, make choices that keep as much of it from reaching the water as possible to help improve the waterway's health.