Some bacteria are almost unimaginably small
Most prokaryotes are the smallest of all organisms, usually only 0.5 to 2.0 μm across. μm They are tiny, but they still carry out the vital processes of life.Cells: The Bacterium You Can See Without a Microscope
Then one bacterium breaks the pattern
The largest known bacterium, Thiomargarita magnifica, is visible to the naked eye. Its average length is about 1 cm, and it can reach 2 cm.Cells: The Bacterium You Can See Without a Microscope
