This example shows how penguin body mass and flipper length relate, with points colored by species using the Observable Plot library. It plots the penguins dataset from @curran/penguins, rendering dots with `Plot.dot` and mapping the `stroke` channel to the `species` field, while a legend appears via a `color` option. The chart is sized to its container and includes a grid and inset padding. The code also handles hot reloading by replacing the existing DOM node, and it overrides default figure margins in CSS.