This scatter plot visualizes the Iris dataset, showing the relationship between sepal length and petal length for three iris species. Each data point is rendered as a distinct shape (circle, square, or triangle) using the d3.symbol API, with a legend mapping shapes to species. The visualization is built with d3.scaleLinear for axes, d3.scaleOrdinal for the shape encoding, and d3.axisLeft/axisBottom for labeled axes. Data is loaded asynchronously from a remote CSV file using d3.csvParse. The chart updates dynamically via the d3.select and join operations.