This animated scatter plot cycles through four numerical attributes of the Palmer Penguins dataset, alternating which variable maps to the x-axis every two seconds while the y-axis remains fixed on culmen length. Built with D3 v6, it uses reusable chart components, linear scales, and SVG circles to render the data. The plot refreshes its axes and points via a `setInterval` callback, updating the x-value accessor to demonstrate dynamic data binding. The dataset is loaded from a GitHub Gist as a CSV, with margins and radius configured through a chainable scatter plot factory function.