This visualization displays the classic Iris dataset, plotting sepal length against sepal width and coloring each point by species. It employs D3.js v7 APIs such as `scaleLinear`, `scaleOrdinal`, `axisBottom`, and `axisLeft` to render the scatter plot, with a linked legend that fades non-hovered species. The code loads CSV data via `d3.csv` and applies BBC-inspired color styling from the theme configuration.