This interactive scatter plot visualizes the Iris dataset, showing the relationship between petal length and sepal width across three species. Hovering over a species in the color legend highlights points of that species while fading all others to 20% opacity. The visualization uses React components with d3.scaleLinear and d3.scaleOrdinal for positioning and color encoding, rendering as SVG. The color legend responds to mouse events via onMouseEnter and onMouseOut handlers, demonstrating a linked-highlight interaction pattern.