This fork visualizes the Penguin Data set as a scatter plot, mapping flipper length to body mass while coloring each point by species (Adelie, Gentoo, or other) and encoding bill dimensions as `rx` and `ry` attributes on the circles. It uses D3 v5’s `csv`, `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` to load data, scale axes, and render an SVG with circles, with styling applied via inline attributes.