This scatter plot visualizes the Iris dataset, mapping sepal length on the x-axis and petal length on the y-axis, with each species distinguished by a unique symbol shape and a corresponding legend. The visualization uses d3.scaleLinear for axes, d3.scaleOrdinal with symbolsFill for shape encoding, and d3.symbol to render the marks. Axes and labels are drawn via custom functions. Data is loaded asynchronously using d3.csvParse from a remote CSV file, and the plot updates responsively to the window size.