A bowl of fruits visualizes data joins in D3.js v5, showing five circles that represent fruit types. The example uses `d3.scaleOrdinal` to map fruit types to colors and radius values, with SVG circles positioned along a horizontal axis. After rendering, a `setTimeout` removes the last fruit, and another replaces one fruit with a lemon, triggering enter, update, and exit selections through the `render` function. The code demonstrates fundamental DOM manipulation with `d3.select`, `selection.data`, `selection.enter`, and `selection.exit` on a static SVG canvas.