Tardigrade (water bear) lifespan and age in human years
Average lifespan about 12 months
Tardigrade (water bear) live about 12 months on average. Below is a chart converting Tardigrade (water bear) age into human years, plus a calculator.
How old in human years?
Age
Tardigrade (water bear) age chart in human years
Shaded rows are equivalent to human age 60+.
| Tardigrade (water bear) | Human age | Stage |
|---|---|---|
| 3 mo | 22 | Adult |
| 6 mo | 43 | Middle age |
| 9 mo | 63 | Senior |
| 1 yr | 84 | Elderly |
| 1 yr 3 mo | 105 | Elderly |
Sources
How we convert ages: method.
More Microscopic life
Roundworm (C. elegans)Lifespan about 21 days
Water flea (Daphnia)Lifespan about 20 days
Moina (water flea)Lifespan about 12 days
Cyclopoid copepodLifespan about 1 months
Rotifer (Brachionus plicatilis)Lifespan about 4 days
Bdelloid rotiferLifespan about 14 days
Brine shrimp (Artemia)Lifespan about 3 months
HydraLifespan Biologically immortal (can revert to youth)
PlanarianLifespan Biologically immortal (can revert to youth)