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Gastrotrichs
You may be wondering what a gastrotrich is and don’t worry, we did at first. However, we’ve since learned that gastrotrichs are microorganisms that can be found in marine biomes. They are not visible to the eye and only life for a maximum of three days.
Mayflies
In our most depressing moment for 10Most. We have to reveal that the animal with the shortest lifespan is a mayfly. Just how short is the lifespan? Well, unfortunately, these mayflies only live for a day.
