This scatter plot visualizes the Iris dataset, plotting sepal length against petal length with points colored by species. The visualization uses D3 v5 with SVG rendering, employing `d3.scaleLinear` for the x and y axes, `d3.scaleOrdinal` with `d3.schemeCategory10` for color encoding, and the `d3-legend` library to generate a circle-shaped color legend. The chart features hidden domain lines, styled tick marks, and large axis labels.