This scatter plot uses the classic Iris dataset to show the relationship between sepal length and petal length, with different symbols distinguishing the three iris species. The visualization is built using D3.js v7, leveraging `scaleLinear` for axes, `scaleOrdinal` with `symbolsFill` to map species to distinct shapes, and a custom shape legend. The code imports specific D3 modules like `axisLeft`, `axisBottom`, and `symbol` to render the plot, while the CSV data is fetched from a GitHub repository and parsed with `csvParse`.