This visualization displays Fisher's Iris dataset, plotting sepal length against sepal width for three iris species (setosa, versicolor, and virginica) using a scatter plot. Each species is represented by colored circles with distinct BBC-inspired palette colors, and hovering over a legend item fades non-matching data points. The D3.js code loads CSV data via `d3.csv`, constructs linear scales with `scaleLinear`, and renders axes with `axisBottom` and `axisLeft`. A `ResizeObserver` manages responsive sizing.