This visualization presents earthquake data as a bubble chart plotting longitude and latitude, with bubble size encoding earthquake magnitude and color representing the continent. It includes interactive filtering by continent through the legend, which also shows size ranges. Built with D3 v7, the code uses `d3.select`, `d3.scaleOrdinal`, and `d3.scaleLinear` to render circles in an SVG, with a custom CSV parser for the earthquake dataset. Hovering over bubbles reveals tooltips showing magnitude and continent details.