This scatter plot visualizes the Iris dataset, mapping petal length against sepal width, with points colored by species. An interactive legend allows users to hover over species names, highlighting only the corresponding data points and fading the others. The visualization is built with React and rendered as SVG, using d3.scaleLinear for axes and d3.scaleOrdinal for color mapping. Point tooltips display the precise petal length value using d3.format.