Turritopsis dohrnii, or the eternal jellyfish, is a tiny jellyfish native to the Mediterranean Sea.
It can also be found in the Atlantic Ocean and the Caribbean Sea.
The immortal jellyfish is unique in that it may revert to its polyp stage after maturation. This means it can theoretically survive indefinitely.
The eternal jellyfish is a fascinating organism that has scientists confused about its secret to immortality.
Scientists are still trying to figure out how the immortal jellyfish can return to its polyp stage.
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