Five circles representing fruit enter and update in an animated SVG scene, changing color and radius based on fruit type while exiting when their data is removed. The example demonstrates D3's general update pattern, binding data by a unique ID and using chained `.transition().duration()` calls to animate radius, x-position, and removal effects. The code imports `scaleOrdinal` from D3 for color and radius mappings, and the data array is mutated with `pop()` and array filtering before re-rendering.