The Immortal Jellyfish Resets Its Own Biological Clock

Turritopsis dohrnii can revert from adult back to its juvenile polyp stage through transdifferentiation — where mature cells transform into different cell types. Theoretically, it can repeat this cycle indefinitely, making it biologically immortal.

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https://en.wikipedia.org/wiki/Turritopsis_dohrnii

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Published: April 2, 2026
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Fish Marine Life Science Weird Biology

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