This interactive example displays a collection of clickable circles, known as "bubbles," arranged across a light-green canvas. A click on any bubble triggers a popup overlay revealing its position, radius, and color values. The visualization implements a unidirectional data flow pattern using a custom state management function, while D3 v7's `select` and data join methods handle the SVG rendering and click events. The red-toned palette creates a cohesive, simple interface for exploring the static dataset.