This interactive scatter plot visualizes the Iris dataset, mapping sepal length against petal length to reveal species clusters. The visualization uses D3.js v7 to create circles whose radius starts at zero, expanding to full size, with hover interactions that enlarge points. It employs `d3.scaleLinear` for both axes, `d3.scaleOrdinal` for species color mapping, and grid lines via `d3.axisLeft` and `d3.axisBottom`. Data is loaded from a CSV URL using `d3.csv`.