A sequences sunburst visualizes hierarchical path data from a CSV of user clickstreams, showing the proportion of each navigation sequence in a metagenome sample. The interactive chart uses d3.partition and d3.arc to render the radial layout, with breadcrumb trails and percentage labels updating on hover via mouseover and mouseleave handlers. It fades non-ancestor segments and animates opacity transitions, using d3.hierarchy and d3.csvParseRows to process the data.