This scatter plot shows the relationship between sepal length and petal length for 150 iris flowers, with each species distinguished by a unique symbol shape. The visualization uses d3.scaleLinear for both axes and d3.scaleOrdinal with symbolsFill to map species to different marker shapes. Data is loaded asynchronously from a GitHub-hosted CSV file using d3.csvParse. The chart includes labeled axes via d3.axisLeft and d3.axisBottom, plus a custom shape legend generated with d3.symbol.