We generally think of water as just...water and maybe a little dirt and bacteria added in if the water isn't clean. But there is something absolutely incredible in most water that is rarely seen by the average person. Diatoms. Diatoms are single celled organisms which live in water. In fact, they may even be in the water you drink ! They come in some of the most unnatural looking shapes and designs you can find in the natural world! Unlike snowflakes, these aren't just inanimate crystals! These are living organisms! Of course, besides the living ones, there are also trillions upon trillions of dead ones as they generally only live for a few days! And the size of these incredible constructions are generally only about 2 to 200 micrometers, which is about the thickness of a single human hair! So what is the purpose of these living, microscopic mansions? Well, diatoms are responsible for creating up to 50% of the oxygen produced on Earth each year! Nearly double the amount of oxygen produced by trees!