This interactive bubble chart visualizes sepal length, sepal width, and petal length for 150 iris flowers, with bubble size encoding petal length and color distinguishing three species. The visualization uses D3 v7 with linear scales for axes, an ordinal color scale, and CSV data loading from a GitHub repository. Hovering over a bubble triggers tooltips displaying species and measurement details, while the semi-transparent circles respond to mouse events for highlighting. The chart renders as SVG with fixed margins and axis labels for sepal dimensions in centimeters.