This visualization shows the Iris dataset, comparing sepal length and sepal width across three iris species using an interactive scatter plot. The chart uses D3.js v7 with SVG rendering, employing `d3.scaleLinear`, `d3.scaleOrdinal`, and `d3.axisBottom`/`d3.axisLeft` to map the measurements and display axes. Points are colored by species using BBC-themed colors from `theme.js`, with a legend that supports hover highlighting via `mouseenter` and `mouseleave` events, fading non-selected species. The dataset is loaded via `d3.csv` from a remote gist URL.