This scatter plot visualizes the relationship between sepal length and sepal width from the Iris dataset, with species information indicated through a shape legend. It uses D3.js (v7) with the `d3.axisBottom` and `d3.axisLeft` APIs to generate the axes, `d3.scaleLinear` for coordinate mapping, and `d3.symbols` for the legend shapes. The plot is rendered as an SVG, with each flower represented as a steelblue circle positioned by its sepal measurements. The implementation loads data from a CSV file and draws the chart programmatically.