This interactive scatter plot visualizes earthquake magnitudes over time, with points colored by depth category (shallow, intermediate, deep) using a D3 ordinal color scale. Users can zoom horizontally via a d3.zoom behavior that rescales the time axis, and hover over the color legend to highlight matching earthquakes. The chart uses d3.scaleTime and d3.scaleLinear for axes, with data loaded from a CSV file containing USGS earthquake records. A brush selection adds black strokes to selected points, though the zoom functionality takes precedence.