This scatter plot uses d3.v7 to visualize the Fisher's Iris dataset, depicting sepal length and width for three iris species. It leverages `d3.scaleLinear` for the axes and `d3.scaleOrdinal` for color mapping, with a legend. Points are SVG circles whose opacity fades when hovering over legend items. The styled chart includes a title, subtitle, and source attribution, using BBC Graphics color themes.