This interactive scatter plot animates through the Iris dataset, cycling the x-axis among four measurements while fixing sepal length on the y-axis. Points are colored by species (setosa, versicolor, virginica) and rendered as ellipses whose rx/ry values encode sepal dimensions. Built with D3.js `scaleLinear`, `extent`, `axisLeft`, and `axisBottom`, the visualization uses animated SVG circle updates via `setInterval` and `selectAll`, with a legend and rotating axis labels. Data is loaded asynchronously from a CSV file hosted on GitHub.