This bubble chart displays the relationship between sepal length and sepal width for three Iris species, with petal length encoded as bubble size and species shown by color. The visualization uses the D3.js v7 library to render SVG circles, with linear scales mapping sepal measurements to x and y coordinates. A tooltip reveals species, sepal length, and sepal width on mouseover. The chart includes a legend showing species color assignments and is built from the Iris dataset loaded via `d3.csv`.