This scatter plot displays penguin measurements, mapping flipper length against body mass for individual penguins. The visualization uses color-coded circles to differentiate three penguin species: Adelie (yellow), Gentoo (green), and Chinstrap (brown). Built with D3 v5, the code loads CSV data from a GitHub gist, uses `d3.csv` for parsing, `d3.scaleLinear` and `d3.extent` for scaling axes, and renders SVG circles with `d3.select` and `.join`. Axis labels and a title are added using SVG text elements.