This interactive scatter plot visualizes the Iris dataset, allowing users to explore relationships between flower measurements through dropdown menus for x, y, and species selection. The plot renders SVG circles with animated transitions, where points grow from radius zero upon appearance and smoothly reposition when axes change. Selecting a specific species filters the display to show only those data points in salmon while other selections show all species in blue. The implementation uses D3 v6's `selectAll().join()` pattern for efficient SVG element updates, `transition()` for animations, and modular chart and menu components built with `dispatch` events.