Questions tagged [evolution]

For questions about the long-term change of a specific species, type of creature, or trait, usually through the process of natural selection and reproduction. Consider also [creature-design].

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2
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0answers
37 views

Semi-terrestrial/Amphibious Jellyfish?

I have a concept for a special kind of jellyfish that somewhat bears a resemblance to the generic slimes of videogames. This jellyfish was of the Cubozoa class and existed roughly 300 million years ...
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11answers
3k views

Plausibility of Ice Eaters in the Arctic

Could a creature plausibly exist with its diet consisting of consuming ice, possibly for hydration? I'm unaware if it needs a secondary diet for nutrition, but how would its metabolism feasibly work?...
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0answers
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How could an energy lifeform evolve on a rocky planet?

The planet in question has to be rocky, it could be a super Earth, but not necessarily. All I need to know is what environmental circumstances would allow what we could call an energy lifeform. I know ...
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9answers
6k views
+50

Anatomically correct Arachne

In the fantasy culture it's not uncommon to find Giant spiders with the upper body of a human. There are many variants as the spider body having only 4 legs and the upper human body have 2 additional ...
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2answers
295 views

4 ears, Possible or Inconceivable?

This question has no background information here. I just want to know if there are any evolutionary advantages for a species to have 4 ears?(The kind a mammal has).
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5answers
563 views

What possible combinations are there for hexapods?

On Earth, life took on a quadruped body plan which has lead to many different sub body plans; 4 legged, 2 legs-2 wings, 2 legs-2 arms, etc. This has made me wonder what possible sub body plans can ...
7
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5answers
876 views

Anatomically Correct Ahuizotl

The Ahuizotl is a creature from Aztec mythology. It is aquatic, and appears similar to a small dog with grasping forepaws like a raccoon or monkey's, and a very long tail ending with an extra hand. ...
5
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2answers
257 views

Could my Ents exist?

contrary to popular belief, Ents are not actually plants but are actually a species of animal which resembles trees as a technique of camouflage. some basic characteristics of these Ents include: ...
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6answers
905 views

A logical reason for humans to turn into dwarves/gnomes?

I am creating a fantasy world where on one continent there are humans, dwarves and gnomes. All 'species' can interbreed (much like Neanderthals and Homo Sapiens), thus they need to have close similar ...
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3answers
116 views

Why would the front appendages be for locomotion?

There are several scifi creatures that have their locomotive appendages where we have our arms and their manipulation appendages where we have our legs. Look at Star Wars for an example. Why would any ...
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0answers
88 views

Could a fish girl actually evolve? [closed]

In the new cartoon Cleopatra in Space, the pictured character, Akila Theoris, says this about her species "Ok, I'm from Vevoson. Vevosonians are similar to humans because of convergent evolution, ...
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1answer
89 views

How does gigantic spider scale tall buildings?

Imagine a spider as big as an African elephant weighting 1 metric tons or less loves to leap from buildings to buildings, I wonder would it legs still works like it used to for the tiny critters using ...
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1answer
86 views

How to make a bird/human hybrid language

In my world, through the work of magic, a group of humans were mutated into half-bird people. I've figured out most of the anatomy so I wanted to know how their speech would work. If it matters, ...
6
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1answer
112 views

What could pressure a humanoid shape?

My previous question asked if a stegosaur could become bipedal. I guess I should have asked if and how it could become humanoid-like. Asking if this is possible made me think about all the other vague ...
3
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3answers
106 views

How do slime supports their weight and reach higher places?

Unlike typical slime that flows and drip from a height, there is a new species of slime that is capable of scaling height in search of food. I am wondering how does a gloopy and slow moving slime ...
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8answers
489 views

What evolutionary pressures would lead to fairies?

Consider this a remake of my "Why might a group of insects evolve to resemble humans?" post. Fairies are a common trope in fantasy works, residing in woodlands and swamps some characteristics of ...
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2answers
117 views

Evolution of Rockfolk

contrary to popular belief Rockfolk are not actually living rocks but rather a animal that coat themselves in rocks and stones. some basic characteristics of these Rockfolk include: have extremely ...
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6answers
360 views

In what ways is a food chain like this most likely to evolve?

There was a nuclear war in my world Anthropocene. It caused a mass extinction of numerous animals on the planet, so many I can’t cover them all completely, so I’ll tell you what animals are left: ...
8
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2answers
373 views

Could my “erect penguins” exist?

In the story I'm writing, a group of African penguins evolved to be fully upright (instead of having their knees bent like modern penguins). Now some basic characteristics of these "erect ...
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14answers
5k views

How would predation work in an empathic universe?

In my world, there is a plane of existence whose laws of reality work differently than ours. In this plane, thoughts are not private. The boundaries between the mind and reality are slim, and thus ...
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5answers
190 views

Evolution of werewolves

contrary to popular belief Werewolves are not actually cursed or infected humans but rather there own separate species. some basic characteristics of these Werewolves include: are carnivores live in ...
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1answer
79 views

Could a stegosaur-like creature become bipedal?

We think stegosaurs could go on their hind legs to get at treetops. Could something like this evolve into a biped? In addition, can you think of other scenarios for bipeds to evolve?
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1answer
153 views

A society where you imprison/ bury the females [closed]

The hornbill imprisons its mate in a tree to deter predators. In Wayne Barlowe's Expedition, the sac-back female buries itself. What if something like this were a feature in a sentient species? How ...
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1answer
70 views

How could humanoids evolve without having once been treedwellers?

We look the way we do because our ancestors were once tree climbers of forests that started to recede and then they moved to the land and stood upright to carry food better. Could alien life evolve to ...
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2answers
165 views

Could my Sirens exist?

contrary to most modern depictions of Sirens. my Sirens are based off some of the earlier bird-like depictions. some basic characteristics of my Sirens include: are carnivores nest on small, rocky ...
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1answer
63 views

Evolutionary narrative for bipedal troglodytes

It would be easy to assume conventional evolutionary heritage and have humans move into caves later, but in this otherwise earth-like world, the surface was never habitable. Given the somewhat ...
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1answer
97 views

Anatomically Correct Glebsig [closed]

A Glebsig (plural Glebsigi) is an intelligent alien species from the game Stellaris. They look like this: Glebsigi can float in mid-air with their tentacles hanging below. Glebsigi manipulate things ...
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7answers
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What is needed in a species for it to be particularly weak while pregnant?

Pardon in advance for the formatting, as I am writing this on mobile. In the world I'm building, I'm exploring a new idea for a species. I would like it to have a long gestation time, and to be ...
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4answers
298 views

What natural factors could possibly push a species of eusocial insects to become intelligent?

So, I am working on a species called the Vosians, who hail from the planet Vos. They are a species of eusocial insectoids, much like Earth ants. Biology The Vosians are about 3 feet tall, or 0.9 ...
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3answers
562 views

Anatomically Correct Akaname

This is a submission for the Anatomically Correct Series In Japan, there is a legend about scuzzy little creatures known as akaname. These things are said to have a humanoid shape, red skin, stringy ...
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4answers
939 views

Is this subspeciation plausible?

Below is a diagram showing transverse cross sections of skulls representative of the two subspecies (A and B) of the Trilateral* species. Is it plausible that such obvious differences – noting the ...
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2answers
128 views

How could an animal evolve with carbon nanotubes?

Is it biologically feasible for an animal to evolve in a way that allows the body to produce carbon nanotubes? How could this happen? What advantages would it give?
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6answers
274 views

What conditions might produce creatures that don’t believe in choice?

Whether or not “free will” exists, and whether or not the future has multiple “possible” outcomes, is a very deep philosophical question with a long history. One of the reasons this debate is so rich ...
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3answers
138 views

Giant bugs part 1: nature

So a little bit ago I asked a question that asked multiple questions so my new strategy is too ask multiple questions. First off this first question is going to revolve around the bugs themselves and ...
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5answers
1k views

Electroreception for human beings

Having been looking into scientifically plausible forms of telepathy, I stumbled across the electroreception senses that exist in some electric fish (and in a few land-dwelling marsupials). My ...
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2answers
2k views

Life on Earth without a magnetic field?

Consider an Earth-like planet in a solar system much like ours that doesn’t have any magnetic field (or at least a very weak magnetic field) because of a lack of metals like Nickel beneath the surface....
4
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1answer
92 views

Could cilliates evolve into multicellular creatures?

Would it be possible for a cilliate, such as Stentor, to evolve into a large multicellular organism similar in form to the original unicellular body-plan?
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2answers
126 views

Giant superpredatory pike?

In my world, there is a species of pike, like a muskellunge, but it grows to massive proportions. They are 9 to 18 ft and weight 235-1,900 lb, with a maximum size of 26 ft and 3 tons. They live in ...
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3answers
4k views

How would snake creatures which use uroboros to roll to safety avoid brain damage?

Imagine a particular species of snake living in a mountainous region that when provoked or threatened will curve itself into a loop and every muscle in its body will tighten as it rolls down the slope ...
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7answers
4k views

Would a trained falcon be useful as a scout?

Game of thrones has Orell who uses an eagle to scout the area. And in the real life, birds of prey have up to 8 times visual acuity of the humans. They are able to see white rabbits camouflaged in a ...
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2answers
184 views

Hypothetical future space scenario question? [closed]

Could human scientists use terraformed or Paraterraformed worlds in our solar system like our moon or mars to run unimaginable large scale Experimental Evolution Projects to see how life might evolve ...
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4answers
126 views

Could an obligate relationship between a sapient species, and a species with appendages for manipulating its environment evolve?

I was thinking of a situation, in which there are two species, one with similar intelligence to humans, but no appendage for manipulating the world around it, and another species that is not sapient, ...
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6answers
1k views

Can a sapient species evolve that needs little or no sleep?

Humans sleep more then nearly any other creature (true sleep, not low-activity like cats and sloths), and are some of the only true sapient species on earth. Many other intelligent, or nearly sapient,...
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9answers
4k views

Is there a reason a flying species can't use lighter than air gas to help provide lift? [duplicate]

I was generally considering the idea of a flying species that uses lighter than air (LTA) gas to help provide lift, allowing it to have a larger mass than flying species can usually attend. I used ...
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2answers
152 views

How long would it take for two (or more) groups of geographically isolated human beings to lose the ability to procreate with one another?

Primarily a biological question, but I'd also love to dig into social implications. Here's the story - Humans have colonized at least one other planet and trade / communication remained open for some ...
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3answers
140 views

Could only flying creatures exist on my planet?

I want to create a speculative evolution project about a planet called Icarus. Basically, it is roughly equal in size to Earth, but has 80% of its gravity, and an atmosphere 50% denser. What I’m ...
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1answer
64 views

Hypothetical selective breeding scenario question two?

Could one using selective breeding and artificial induced selective pressures breed a tree climbing Anole lizard to become something that resembles a gliding pterosaur from the Mid Triassic or early ...
2
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0answers
653 views

Anatomically Correct Orcs [closed]

This is a submission for the Anatomically Correct Series Orcs have been a staple fantasy enemy race for decades, but could such a species exist in real life? Some basic characteristics of Orcs include:...
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3answers
301 views

Anatomically Correct Vanara

Apart of the Anatomically Correct Series Vanara The Vanara is a group of people who lives in the forest in the Hindu epic "Ramayana." In there, it describes them as human-like, with reference to ...
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4answers
142 views

Hand mouths evolution

You can skip to TL:DR down below Arms are strong, stronger than jaws. People can break each others arms just by playing. Grip strength can easily reach a point of crushing 75 kilograms and holding a ...

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