This scatter plot visualizes the Iris dataset, mapping sepal length against petal length for three species. Each species is represented by a distinct symbol shape, with a legend showing the mapping between the categorical species variable and the corresponding shape. The visualization uses D3 v7, employing `scaleLinear` for the axes, `scaleOrdinal` with `symbolsFill` for shape encoding, and custom modules for axes and legend rendering. Data is loaded from a remote CSV file and parsed using `csvParse`.