Immortal Jellyfish
The adult animal can actually revert back into the polyp stage, absorbing the tentacles and the jellyfish bell as it reattaches itself to the ground. It now extends those same stolons to make a whole new hydroid colony. Lab experiments showed that they will do this as a result of starvation, temperature change or drops in salinity. They can also do this at any stage of jellyfish development, from being a tiny thing 1 mm across to a not quite tiny, sexually mature adult.

Immortal Jellyfish


The adult animal can actually revert back into the polyp stage, absorbing the tentacles and the jellyfish bell as it reattaches itself to the ground. It now extends those same stolons to make a whole new hydroid colony. Lab experiments showed that they will do this as a result of starvation, temperature change or drops in salinity. They can also do this at any stage of jellyfish development, from being a tiny thing 1 mm across to a not quite tiny, sexually mature adult.


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    If only we could graft the DNA of this jellyfish onto ours… we’d be able to regenerate…and essentially stay young and...
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