This interactive scatter plot visualizes penguin body mass against flipper length, with each circle colored by species: yellow for Adelie, green for Gentoo, and brown for Chinstrap. The data comes from a CSV loaded via `d3.csv`. The visualization uses D3 v5’s `scaleLinear`, `axisLeft`, and `axisBottom` to render axes, while circles are appended to an SVG using `selectAll` and `join`. Point radii are fixed, but the `rx` and `ry` attributes are set to the penguin’s bill length and depth, though these do not affect circle shape. A title is added via an SVG `<text>` element.