Originally posted by Bang Guy
The theory I heard was measuring the corals around them with known growth rates. Some of the older Anemone sit in a well where the coral have grown around them over the centuries.
I have read that theory and am not very fond of it becuase well, anemones move, even in the wild, and besides reproduction asexually, they all can reproduce sexually, so odds are just as well that they spawned there, or moved to those spots. The thruth is we don't know how long they live in the wild, a lot of people say indefinate, because of they do split that it is just a splinter of itself and the life is everlasting for the anemone, here is a little clip I saved from a while back. I am of the belief thousands of years is likely, but yet to be proven.
LIFE SPANS OF SEA ANEMONES
Sea Anemones have not been kept in aquaria long enough to establish with any certainty how long sea anemones naturally live, if not predated upon or dying from causes other than old age. However, there are records of large tropical display anemones living for several decades in Public Aquaria, housing several generations of commensal Clownfish, Amphiprion ocellaris. AH
John Ottaway and Ken Sebens have made actuarial tables for anemones.Since they came up with potential lifespans on the order of several centuries, personal experience is unlikely to be a good guide. (Daphne Fautin).
Daphne G. Fautin
Professor, Biological Sciences
Curator, Natural History Museum and Biodiversity Research Center
Haworth Hall
University of Kansas