Generate a random microbe from 48 bacteria, viruses, protists, and extremophiles -- the invisible majority of life, each with the strange thing it does.
A microbe is any organism too small to see without a microscope -- bacteria, archaea, viruses, protists, and microscopic fungi. They are the oldest, most numerous, and most diverse life on Earth: a spoonful of soil holds more microbes than there are people on the planet. Most are harmless or essential -- they run the planet's oxygen, nitrogen, and carbon cycles, ferment food, and make up roughly half the cells you carry around. A few cause disease, which is how the whole invisible kingdom got its unfair reputation.
This generator cultures 48 microbes across five plates -- Bacteria, Archaea & Extremophiles, Viruses, Protists, and Micro-Fungi & Others -- each with the strange thing it does, from the bacterium that survives 1,000x a lethal radiation dose to the slime mold that redesigned Tokyo's rail map.
Every result here is drawn using crypto.getRandomValues() -- the Web Crypto API's cryptographically secure randomness -- instead of Math.random(), so it's genuinely unpredictable, not just statistically random. Learn more.
Meet the invisible majority of life one draw at a time, find a microbiology report subject with an actual story, stock a science-class warm-up, or collect the party facts -- half your cells aren't yours, 8% of your genome is old viruses, and the largest bacterium is visible to the naked eye.
Generate draws one microbe at random using the site's cryptographically secure randomness, never repeating the microbe currently shown in single-result mode. Every draw explains what makes it remarkable, and the Plate filter narrows by kingdom -- just viruses, just extremophiles, and so on.
A sample of what this generator can draw, spread evenly across the full list:
Biology's favorite argument. Viruses can't metabolize or reproduce without hijacking a cell, so most definitions of life exclude them -- but giant viruses like Mimivirus blur the line badly enough that the debate stays open.
The opposite -- pathogens are a tiny minority. Most microbes are harmless or working for you: fermenting your food, fixing nitrogen for crops, making a fifth of the oxygen you breathe (thank the diatoms), and running your gut.
A microbe that thrives where nothing should -- boiling vents, battery-acid pools, saturated salt, bare rock in Antarctica. They're why astrobiologists take life on Mars seriously: Earth already proved the tolerances.
Plant · Tree · Flower · Mushroom · Houseplant