This scatter plot visualizes the Palmer Penguins dataset, showing flipper length against body mass for three penguin species, each colored distinctly. The visualization is built with D3 v6 using the `select`, `scaleLinear`, `extent`, and `axisLeft`/`axisBottom` APIs, rendering as SVG circles mapped from CSV data. The code creates axis labels and a title while loading data asynchronously via `d3.csv`. Mouseover events log data to the console, though no visible tooltip is implemented despite a placeholder div.