Compare two animals

Tardigrade

Length

0.1 to 1.5 mm (tardigrades in general (Cell Press, 2008); Milnesium tardigradum reaches about 1 mm)

Lifespan in the wild

up to 58 days (longest-lived animal in a 2003 laboratory culture of a Japanese Milnesium strain, then called M. tardigradum and now M. inceptum (active life, at 25 °C))

Lives in

Africa, Asia, Europe, North America, South America, Australia and Oceania and Antarctica