This fork of the Penguin dataset visualizes flipper length against body mass as a scatter plot, with circles colored by species (Adelie, Gentoo, and Chinstrap). It uses D3 v5's `csv`, `scaleLinear`, `extent`, `axisLeft`, `axisBottom`, and SVG circles to render the data. A secondary pair of attributes—bill length and bill depth—are stored on each mark but not directly displayed. The chart includes rotated axis labels and a title, rendered via SVG within a React-free HTML page.