This scatter plot shows the relationship between sepal length and petal length for three iris species, with each species represented by a distinct shape symbol. The visualization uses D3 v7 to render an SVG canvas, employing `scaleLinear` for both axes and `scaleOrdinal` with `symbolsFill` to map species to shapes. A custom shape legend displays the species symbols with labels. The data is fetched from a CSV file and parsed with `csvParse`, with numeric columns converted to numbers. The axes are drawn with `axisLeft` and `axisBottom` from D3's import, and the chart is built using the join pattern for declarative updates.