A scatter plot maps sepal length against petal length for iris flowers, using distinct symbols to encode species and a custom legend for identification. Built with D3 v7, the visualization fetches CSV data from a GitHub repository, parses it, and renders marks via the `symbol` generator with `symbolsFill` shapes. Axes are managed through reusable modules, and an ordinal color scale from `schemeCategory10` colors each species, with legends positioned statically.