Biologically immortal organisms exist in nature

the verdict

SUPPORTED

the evidence backs this

Recorded sources

3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Multiple scientific studies document that certain organisms, most notably the jellyfish Turritopsis dohrnii, possess the ability to undergo reverse development and cellular transdifferentiation, allowing them to effectively escape biological death and achieve biological immortality.

The analysis

The claim asserts that biologically immortal organisms exist in nature. Retrieved papers explicitly discuss Turritopsis dohrnii, commonly known as the 'immortal jellyfish', detailing its biological mechanisms for reversing its life cycle and avoiding death. Papers 1, 3, and 5 strongly support this phenomenon with genetic and literature evidence, while no papers refute it. Therefore, the verdict is SUPPORTED.

Evidence for · 3

Transcriptome Characterization of Reverse Development in Turritopsis dohrnii (Hydrozoa, Cnidaria)

Recorded source metadata

Yui Matsumoto, Stefano Piraino, Maria Pia Miglietta. Transcriptome Characterization of Reverse Development in Turritopsis dohrnii (Hydrozoa, Cnidaria). 2019. https://doi.org/10.1534/g3.119.400487

Paper 1 characterizes the transcriptome of Turritopsis dohrnii and details its ability to undergo reverse development and cellular transdifferentiation to escape aging and damage.

Source citation format

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More for · 2

The genetic networks of regeneration, cell plasticity, and longevity of the Immortal Jellyfish Turritopsis dohrnii (Cnidaria, Hydrozoa)

Recorded source metadata

Yui Matsumoto, Maria Pia Miglietta. The genetic networks of regeneration, cell plasticity, and longevity of the Immortal Jellyfish Turritopsis dohrnii (Cnidaria, Hydrozoa). 2025. https://doi.org/10.1101/2025.07.02.660568

Paper 3 describes how the immortal jellyfish Turritopsis dohrnii reverts to an earlier life cycle stage when damaged or exposed to lethal conditions, effectively escaping death.

Source citation format

TRANSDIFERENCIAÇÃO CELULAR E SEU CICLO DE VIDA: TURRITOPSIS DOHRNII UMA REVISÃO DA LITERATURA

Recorded source metadata

Vinicius Lodi Cordeiro Karabolsak, Neidiane Justino de Oliveira, Andréa Regiani Alves, Ana Claudia Pelizon. TRANSDIFERENCIAÇÃO CELULAR E SEU CICLO DE VIDA: TURRITOPSIS DOHRNII UMA REVISÃO DA LITERATURA. 2021. https://doi.org/10.33947/1982-3282-v15n3-4-4676

Paper 5 reviews the literature on Turritopsis dohrnii, highlighting its ability to reverse its adult life cycle back to the initial polyp stage, suspending biological death.

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → SUPPORTED · 8401 Aug 2026

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