ELI5: Explain Like I'm 5

Di Yu

Di yu is a type of powder that is made from the shells of tiny sea creatures called diatoms. These diatoms are so small that you need a microscope to see them, but they are very important because they help keep our planet healthy by producing oxygen and absorbing carbon dioxide.

To make di yu, the diatom shells are ground into a fine powder that can be used for all sorts of things. One of the most common uses of di yu is as a natural insecticide. This means that it can be used to help get rid of pests like fleas and ticks that might bother pets, or even to keep bugs out of your garden.

But di yu isn't just useful for pest control. It can also be used in things like toothpaste and as a natural filtration agent for swimming pools. That's because the tiny shells have a lot of tiny pores in them that can trap things like dirt and impurities.

So even though di yu might seem like insignificant little sea creatures, they actually play a big role in keeping things clean and healthy both in nature and in our everyday lives.