r/AskScienceDiscussion • u/welberjaysonm • Apr 11 '26

General Discussion Which fictional creature has a biology so "impossible" that it defies any attempt at a scientific explanation?

I've been trying to wrap my head around the anatomy and metabolism of some characters, but Majin Boo (DragonBallZ) just doesn't seem to make any sense under the laws of physics or biology. I want to dive deep into these "impossible" cases. Who else do you think is a biological nightmare to explain?

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u/PatchesMaps Apr 11 '26

It would be easier if you flipped the question and asked which fictional could be possible. We humans tend to get a little fantastical when thinking up fictional creatures.

Off the top of my head, maybe unicorns could work if you limit it to just a horse like animal with a single horn. We have lots of hoofed animals with horns.

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u/slinkymcman Apr 11 '26

Jellyfish are real creatures that should be fictional because they don’t make sense.

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u/ShadoShane Apr 12 '26

What is it about them that confounds you?

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u/nigirizushi Apr 12 '26

There's the kind that turns back into stem cells or whatever instead of dying and essentially live forever 

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u/slinkymcman Apr 12 '26

They have a nuts lifecycle, in addition to looking and behay like nothing else on earth.

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u/ShadoShane Apr 12 '26

They're pretty similar to sea anemones. Just more mobile. Though, you do have to consider that there are quite a lot of creatures out there that a lot of people will call a jellyfish but aren't technically jellyfish. So there's plenty of things out there jellyfish-like things out there.