Biological Immortality facts

While investigating facts about Biological Immortality, I found out little known, but curios details like:

There is a species of jellyfish that is biologically immortal. It can return to its undeveloped state through a process known as"transdifferentiation", allowing it to de-age at will. It does this despite not having a brain!

Turritopsis dohrnii', the immortal jellyfish, is a species of small, biologically immortal jellyfish that lives forever. They never die of old age but transform themselves back into their juvenile state. It is the only known species that has figured out how to defeat death.

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 39 of the best facts about Biological Immortality I managed to collect.

1. The immortal jellyfish, Turritopsis dohrnii. This jellyfish is biologically immortal. After mating, it reverts back to its adolescent state and can go through this cycle indefinitely.

2. Transhumanism,an international movement that believes humans are currently in a transition state, and that future biotechnologies will allow us to drastically enhance our physical and cognitive capabilities and to stop biological aging, therefore essentially making us immortal or "transhuman"

3. Turritopsis dohrnii, the immortal jellyfish, which upon being attacked, becoming sick or old, can completely revert to a sexually immature polyp stage, and begin its "life" again - a process which can go on indefinitely - effectively rendering it biologically immortal.

4. The longest living animal in the world, the immortal jellyfish, (turritopsis nutricula jellyfish) has the unique ability to revert back to its premature state when exposed to stress or injury, meaning it is biologically immortal.

5. Thanks to the Octonauts) that there is a species of jellyfish that is biologically immortal; that it can return to its youth and mature again, and again, and again.

6. There are animals which can theoretically live forever because they are 'biologically immortal' including a type of jellyfish and lobster

7. Lobsters have biological immortality - they may not slow down, weaken, or lose fertility with age.

8. One way biological immortality can be attained is by preventing downregulation of the complex Telomerase in somatic cells. In humans, it's only found in large numbers in stem and cancer cells, but in other organisms, it's found in all tissues and some of them have the potential to live forever.

9. The Immortal Jellyfish, which upon reaching maturity reverts itself to immaturity on a cellular level and is considered "biologically immortal"

What is true about biological immortality?

You can easily fact check it by examining the linked well-known sources.

"Negligible Senescence" - the lack of ageing symptoms in some organisms and animals, for example Lobsters. Also, there is apparently something called "Biological Immortality".

Flatworms are biologically immortal. You could cut one of them in half and each part would regenerate into a complete organism. - source

There's a species of jellyfish known as "the immortal jellyfish". When it becomes injured, sick, or old it can completely revert to a sexually immature polyp stage and start its "life" again. This process can go on indefinitely- effectively making it biologically immortal. - source

There is a species of jellyfish which are considered biologically immortal. The Japanese scientist studying them writes songs about the jellyfish and does 2 hours of karaoke every night.

Turritopsis dohrnii' is a species of small, biologically immortal jellyfish. . It is the only known case of an animal capable of reverting completely to a sexually immature, colonial stage after having reached sexual maturity as a solitary individual. - source

Jellyfish are considered biologically immortal. They don’t age and will never die unless they are killed.

There are two types of Jellyfish which are biologically immortal

There is a species of jellyfish that is biologically immortal

Hydra (a genus of small, fresh-water animals) are biologically immortal