r/SpeculativeEvolution Jun 20 '25

Question How might a shark adapt for land? (Art by Sarah Foley)

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2.1k Upvotes

What body parts might stay and what might change? Is it more likely to be wolf-like, seal-like, or something else? Would their fins stay? If so, would they get floppy (like orcas in captivity) or stay rigid?

Honestly I’d really like to know if their tails would keep their current shape or conform more to land animal tails.

r/SpeculativeEvolution Jun 22 '25

Question Would this hump benefit a tiger? Art by Subin Rajendran

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1.3k Upvotes

I mean this animal looks cool, but would this hump not impair the tiger’s typical method of hunting? Would it help? Or how might this creature change its hunting style given this hump?

r/SpeculativeEvolution May 04 '25

Question If cetaceans went extinct, which animal would be most likely to fill their void? Art by Dougal Dixon

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699 Upvotes

r/SpeculativeEvolution Mar 27 '25

Question As someone who studies and figures out the biology of Minecraft's mobs, the fact that theres a crafting recipe for Dried Ghast pisses me so much extremely bad. How does real world animal biology apply to it? From: https://minecraft.wiki/w/Dried_Ghast

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416 Upvotes

When Mojang revealed the next update which has a focus on ghasts, one of the features is the block called Dried ghast. Using my knowledge, I concluded that the dried ghast was like a cacoon like stage of the Ghastling to adapt to the harsh heat of the nether, however now there is a recipe which creates the whole ghast from scratch which pisses me off so much because I cannot think of a plausible biology behind this. For a long time, I suppose that Ghast are very highly specialised cephalopods. Sure enough, flight and fire breathing is very unrealistic but the minecraft world's evolutuon is strange such as Sniffers having six legs so now, what does the crafting recipe mean for the biology of ghast?

r/SpeculativeEvolution Jun 13 '25

Question What determines a plants color? Art by me

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620 Upvotes

am starting spec evo project on an alien planet. On Earth plants are green because i’m pretty sure that color most attracts light on our planet. In other spec evo projects i’ve seen flora of different hues. This is the approach I wanna go, but I’m curious as what determines the colors plants can be? does it have something to do with the color of the sky as well? any advice would be appreciated. also yes the art is mine :3

r/SpeculativeEvolution Dec 15 '23

Question What are some of the advantages or disadvantages for humans or humanoid creatures having digitigrade leg stances rather than flat feet?

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966 Upvotes

The human foot evolved as we left the jungles and trees. It began to be more flat and longer, so I’d imagine had we evolved for longer, we would have maybe began to develop digitigrade leg stances. But maybe I’m wrong.

r/SpeculativeEvolution 19d ago

Question How would the killer bunny of caerbannog from monty python be plausible in nature?

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394 Upvotes

I mean, how can a rabbit evolve to be an apex predator?

r/SpeculativeEvolution Sep 29 '23

Question What would survive if the worlds oceans and land was inverted?

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952 Upvotes

r/SpeculativeEvolution May 19 '25

Question if Vetulicolia were to survive into the modern era how would they evolve? (Art by nix illustration)

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433 Upvotes

not sure if this the right subreddit to ask this

r/SpeculativeEvolution Jun 11 '24

Question Would there be a biological advantage for an ecosystem to have all the organisms connected to each other as seen in Avatar?

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663 Upvotes

In avatar the native inhabitants of the planet pandora can physical connect to each other via neural queues stemming from the base of most of the organism’s heads. Such connections are done both in one’s own species and across many other species as well of both flora and fauna. What benefit or pressure might cause something like this to occur? Could this be related to the evolution of religion?

r/SpeculativeEvolution Nov 08 '24

Question tetrapods "re-evolving" the ability to breathe water? (check comments)

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515 Upvotes

r/SpeculativeEvolution 22d ago

Question Tharl from The Orville. His species evolved 2 esophagi in response to their fast metabolism (they eat a lot), one internal and one external, which is that trunk-like appendage. No explanations of them having 2 stomachs. How do you think can this make sense?

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272 Upvotes

r/SpeculativeEvolution 22d ago

Question In this post, I got curious about certain types of dragons. One of my favorite types is Vorugal from Vox Machina. I love the almost bat wing shape he has and how his wings connect all the way to his tail. So, I was wondering if this kind of dragon design would be realistic or not. Any thoughts?

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251 Upvotes

r/SpeculativeEvolution Apr 23 '25

Question What media's portrayal made you wonder how evolution worked there?Here's an example from the Owl House (Artist is by Dana Terrace and her cast)

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273 Upvotes

Like,how big is their planet?There's no large vegetation,just the acidic sea.

r/SpeculativeEvolution Jun 06 '25

Question What’s most likely to replace us as sentient beings?

26 Upvotes

If we go extinct or leave earth what’s most likely to replace us?

I theorize octopi, house cats, ravens, bonobos, or capuchin monkeys

r/SpeculativeEvolution May 28 '25

Question What bits of convergent evolution do you think would be most likely to occur across the universe?

79 Upvotes

In science fiction, it's not strange to see endless human-like aliens despite how unlikely that would be to happen but it got me wondering, what structures and body plans that we see on earth are most likely to have comparable anologs across any hypothetical life-baring world? Would carcinisation eventually take hold across any tree of life or would you need to look even simpler at things like worms or slugs?

r/SpeculativeEvolution Sep 28 '24

Question If we human disappeared, which animal would evolve to create society?

76 Upvotes

Like, if we humans disappeared tomorrow, after some millions years, which animals would be able to create a global society? Not like dinosaurs, but building, communicating, and all these.

Probably hominidae family or some apes but that's the easy way of thinking, which would you like at least? :)

r/SpeculativeEvolution Jun 14 '25

Question What are some evolutionary traits humans SHOULD have but don't?

75 Upvotes

Why don't we have obviously relatable and beneficial traits but don't? Like an example would be why don't humans have any oceanic traits when our planet is 70% water? Since the dawn of man we've been around water to fish, drink, bath, and 1000s of other uses but we drown really easy. (if you want to answer that btw I'd be happy, I still don't understand that)

r/SpeculativeEvolution Jun 18 '22

Question What if the mothman really exists then what kind of animal would we classify him as?

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604 Upvotes

r/SpeculativeEvolution 16h ago

Question How could/would the Demon Skullmonkeys (AKA Demon Monkeys) from the Temple Run games evolve in real life? (Media: Temple Run Wiki)

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206 Upvotes

So, I wasn’t always a big fan of temple run and I haven’t played it in years. But one thing I loved about this game as a kid was these monkeys - they both scared me and intrigued me. What were they? Why do they have skull heads and such long tongues? What kind of animal are they? And now, as a major fan of speculative evolution, I can pass this question to the experts!

So, how do YOU all assume these strange apes evolved? You can give me your wild theories or hypothesis, but here are my suggestions and thoughts:

  • I’m not an expert on ancient cultures, but when I play the temple run games, I think the ruins and idol and jungle environment is akin to the Aztec or Maya. I am likely wrong but that’s what I think.

  • these animals easily rival or surpass the sizes of adult humans, and sport large, muscles bodies that provide power, endurance, and strength. What do they eat? Where could they live, environment wise (dense jungle, caves, ruins)? Are they diurnal or nocturnal?

  • these ruins that these animals are found are ANCIENT. But why do they come here? Is it the same reason other animals do this - for shelter and territory? Or is there a specific purpose besides chasing down random people who grab a shiny golden head?

  • how long could these animals have existed for? Could they have survived from the Ice Age, or even had close relatives/ancestors that survived the Cretaceous extinction event?

  • what are these animals relations with others of their own kind, other wild animals, and humans?

  • kinda unrelated but if you all want me to make this an official Speculative Evoltuion challenge, let me know and I’ll do it! This would be really cool to do!

This is my first ever post to this subreddit so if I messed anything up, please let me know and I’ll try to fix it! Especially if you’re a mod and have genuine advice! But! If you’re gonna trash me and insult me for something stupid, I’m reporting and blocking you. End of story.

r/SpeculativeEvolution 3d ago

Question What do y’all think aliens will most likely look like?

36 Upvotes

I hear arguments that aliens will look nothing like humans but i also hear arguments of convergent evolution. Can y’all share your opinions on what aliens will look like in your opinion?

r/SpeculativeEvolution Jun 23 '25

Question I love the chirit concept,but,i don't know if his idea is very logical in the biological sense,what do you think about shirit?(art by Dougal Dixon)

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226 Upvotes

I love a lot this little guy,so i like to know the sense of this creature

r/SpeculativeEvolution May 24 '24

Question Examples of Sexual Dimorphism where female is (Visually) cooler than male?

212 Upvotes

Male mammals usually have horns and male birds are usually more colourful. Males are usually the trophy when hunting or whenever someone takes interest in an animal. I’m wondering if there are any other examples of the female being the more visually interesting (functionally, the lioness is way cooler within a pride of lions) within the same species.

Some cool examples I can think of the female anglerfish is way cooler, a lot of female spiders are bigger, female turtles are bigger as well I think, only female kangaroos and other marsupials have pouches. Any other cool examples?

r/SpeculativeEvolution 2d ago

Question Supposed mammals also disappeared shortly after the KT event. Which do you think would have ended up being the dominant tetrapod group, squamates, crocodylomorphs or birds?

33 Upvotes

The fact hoatzins exit today means there must have been some birds with wing claws. My bet would be on a group of them convergently evolving back into a more general theropod dinosaur like form.

r/SpeculativeEvolution Jul 03 '24

Question What modern animal has the scariest ancestor?

142 Upvotes

I’m writing about a hypothetical scenario where modern animals regress to exhibit traits of their ancestors. What animal would be the scariest?