Filed Under: Animal Facts

This Jellyfish Can Live Forever

Immortal Jellyfish

Meet Turritopsis nutricula, the only known creature on this planet that is immortal. After it reaches maturity, this jellyfish can revert back to its youth.

From the Wikipedia article:

“It does this through the cell development process of transdifferentiation. Cell transdifferentiation is when the jellyfish “alters the differentiated state of the cell and transforms it into a new cell”. In this process the medusa of the immortal jellyfish is transformed into the polyps of a new polyp colony. First, the umbrella reverts itself and then the tentacles and mesoglea get resorbed. The reverted medusa then attaches itself to the substrate by the end that had been at the opposite end of the umbrella and starts giving rise to new polyps to form the new colony. Theoretically, this process can go on indefinitely, effectively rendering the jellyfish biologically immortal, although in nature, most Turritopsis, like other medusae, are likely to succumb to predation or disease…”


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