This scatter plot visualizes the relationship between sepal length and petal length in the Iris dataset, with species distinguished by different filled symbols. The visualization uses d3.scaleLinear for axes scaling and d3.scaleOrdinal with d3.symbolsFill to map species to shapes. A custom shape legend displays the species-to-symbol mapping. The data is loaded from a remote CSV file using d3.csvParse, with coordinates plotted as SVG paths via d3.symbol.