A scatterplot shows seabird observations across days in September, with point size encoding mean uncertainty and color distinguishing species. Points animate between yearly frames. The visualization includes axes, a legend mapping common names to Tableau10 colors, and hover tooltips revealing scientific names. It uses d3.csv to load data, d3.scaleLinear for axes, d3.scaleOrdinal for color, d3.scaleSqrt for sizing, and d3.axisBottom/Left. Animated transitions between years rely on D3’s selection join and attribute tweening, with SVG rendering and a tooltip div controlled by mouse events.