This visualization displays the Iris dataset as a scatter plot, mapping sepal length on the x-axis and petal length on the y-axis while encoding species identity through distinct symbol shapes. The chart includes labeled axes and a shape legend that identifies each species. The implementation uses D3 v7 modules, including `scaleLinear` for positioning, `scaleOrdinal` with `symbolsFill` for shape encoding, and custom axis and legend components built from reusable D3 selections. Data is loaded asynchronously via `d3.csvParse` from a remote CSV source, with numerical values coerced for plotting.