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Hydras are simple, freshwater animals possessing radial symmetry and contain post-mitotic cells (cells that will never divide again) only in the extremities. [14] All hydra cells continually divide. [15] It has been suggested that hydras do not undergo senescence, and, as such, are biologically immortal. In a four-year study, 3 cohorts of hydra ...
Turritopsis dohrnii, also known as the immortal jellyfish, is a species of small, biologically immortal jellyfish [2] [3] found worldwide in temperate to tropic waters. It is one of the few known cases of animals capable of reverting completely to a sexually immature, colonial stage after having reached sexual maturity as a solitary individual.
If the mortality rate of a species does not increase after maturity, the species does not age and is said to be biologically immortal.There are numerous plants and animals for which the mortality rate has been observed to actually decrease with age, for all or part of the life cycle. [2]
Turritopsis nutricula is a small hydrozoan that once reaching adulthood, can transfer its cells back to childhood. This adaptive trait likely evolved in order to extend the life of the individual.
While, as shown with creatures such as hydra and Planarian worms, it is indeed possible for a creature to be biologically immortal, these are animals which are physiologically very different from humans, and it is not known if something comparable will ever be possible for humans. [11] [12]
Long before "Twilight" put Jacob on the map, werewolves have been the subject of countless movies, books and monster tales.. In fact, much like ghosts, witches and vampires, the werewolf has been ...
Flatworms, or Platyhelminthes, are known to be "almost immortal" as they have a great regeneration capacity, continuous growth, and binary fission type cellular division. [53] Lobsters are sometimes said to be biologically immortal because they do not seem to slow down, weaken, or lose fertility with age. However, due to the energy needed for ...
Some movies stay in our hearts because of the way they're portrayed or the dialogues that hit the right spots, making them immortal in our memories. For instance, it’s been over 6 years since I ...