This interactive D3.js network graph maps an ecosystem hierarchy, showing continents connected to their resident species, with node size encoding average weight and color distinguishing root, continent, and species levels. Built with d3.v7, the visualization uses d3.forceSimulation with link, charge, center, and collide forces for physics-based layout, while d3.scaleSqrt and d3.scaleOrdinal manage proportional sizing and color coding. Users can drag nodes to reposition them and hover over elements to inspect species details like lifespan, habitat, and diet, with data parsed from CSV via d3.csvParse.