A genus of tiny aquatic invertebrates commonly called water bears or tardigrades, known for extreme survival abilities.
From Greek 'epi' meaning 'upon' and 'hydra' meaning 'water,' literally 'upon water' or 'water-dwelling.' These creatures were named for their aquatic habitat.
Tardigrades can survive in space, extreme cold, and radiation—they're practically indestructible, which is why their name literally just means 'water dweller' but they live almost anywhere!
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