This interactive scatter plot visualizes the Iris dataset, displaying petal length against sepal width. Each circle represents an iris flower, colored by species, and a legend allows users to filter the data by hovering over a species name. Built with React and rendered as SVG using d3.scaleLinear and d3.scaleOrdinal, the visualization implements interactive filtering by toggling point opacity, highlighting only the selected species when a legend item is hovered. The chart reads from a CSV file using the d3.csv function.