Most die very quickly in home aquariums. I'd estimate over 95% of anemones die within the first year because of bad husbandry, such as bad lighting and/or bad water conditions. Very sad, considering they can live forever in an ideal environment (eg. free of predators, stable habitat, etc.) Since they can regenerate any part of their body and organs, I believe they cannot die of old-age, though I doubt anybody has tested this theory. :thinking: