This interactive scatter plot visualizes the Iris dataset, comparing sepal length and width across three species with BBC-style color coding. Built with D3.js, it uses `scaleLinear` and `scaleOrdinal` to map data to positions and colors, with hover functionality on legend items that fades non-selected species using `raise()` and opacity transitions. The chart includes a responsive layout via `ResizeObserver` and custom axis, title, and source annotations.