This interactive scatter plot visualizes the Iris dataset, showing measurements of sepal and petal dimensions for three flower species. Users can dynamically switch the x-axis and y-axis variables via dropdown menus, and filter the displayed species, with circles smoothly animating between positions as axes change. When filtering, points for excluded species animate their radius to zero and are removed, while included species fade in with color coding (orange, blue, red). Built with D3 v6, it uses `selection.join` for enter-update-exit transitions and `d3.transition` for animated updates, with scales created via `d3.scaleLinear`.