This scatter plot visualizes the Iris dataset, mapping sepal length on the x-axis and petal length on the y-axis. It encodes the three iris species using different symbol shapes, with a legend labeled "SPECIES" positioned at the right. The visualization is built with D3 v7, using `scaleLinear` for axes, `scaleOrdinal` with `symbolsFill` for shape encoding, and a custom `shapeLegend` module. Data is loaded asynchronously from a CSV file and parsed with `csvParse`, with all marks rendered as SVG `path` elements.