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(, Sun 1 Apr 2001, 1:00)
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The Hydrozoan species Turritopsis nutricula is capable of cycling from a mature adult stage to an immature polyp stage and back again. This means that there may be no natural limit to its life span.[23] However, no single specimen has been observed for any extended period, and it is impossible to estimate the age of a specimen.
(, Thu 9 Dec 2010, 21:54, Reply)
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