This interactive scatter plot visualizes the Iris Dataset, mapping petal length against sepal width with points colored by species. Hovering over a species name in the color legend dims all other points while highlighting the selected group, implemented through React state management and conditional opacity. The visualization uses d3.scaleLinear for axes, d3.scaleOrdinal for categorical colors, and renders SVG circles via React components. Axis ticks and color legend items are generated from d3 scale domains, with native SVG `<title>` elements providing tooltips on data points.