This interactive scatter plot visualizes sepal length against sepal width for three Iris species, with interactive hovering in the legend highlighting corresponding data points. Built with D3.js, it uses `scaleLinear` for axes, `scaleOrdinal` for color mapping, and custom `join` operations for DOM updates. The legend supports hover interactions that fade unselected species. Data loads from the Fisher's Iris dataset CSV, and the visualization follows the BBC color palette with species-specific styling.