This is the aquarium tank 200 years later. Because of the unsustainable design (non-degradability, ease of disposal and the danger of toxic plastics to marine life), in a few decades there is no sign of life in the ocean at all. In order to allow children to see the sea creatures 200 years ago, scientists can only use the garbage floating in the ocean to make jellyfish shadows. The recyclable nature of products has always been a hot topic in design. When designers break the circle for cost and aesthetics, the ultimate circle of karma returns to humans. When people hold the handle and turn it, the jellyfish will gradually disappear into the garbage. When the marine life becomes extinct, humans will also cease to exist. And after billions of years, the earth comes back to life and jellyfish reappear from the garbage. This represents that the Earth has entered a new era.