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Questions tagged [creature-design]

For questions regarding the viability of a life-form design. These questions should focus on biologically plausible creatures.

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Could an azhdarchid pterosaur take off and fly while being ridden by a human?

Could humans theoretically ride any of the largest azhdarchid pterosaurs, assuuming a wingspan of about 10.5m and weight of about 200-250kg for the largest azhdarchids such as Hatzegopteryz or ...
rhobot's user avatar
  • 11
5 votes
1 answer
653 views

Can a Tidally-Breathing Animal Possess a Syrinx?

I have been imagining/designing a reptile-like animal that breathes tidally, but possesses a syrinx for complex vocalization. Is this biomechanically possible, or is unidirectional breathing a ...
Mike's user avatar
  • 63
-5 votes
1 answer
97 views

How to defeat a villiain that is too powerfull in a fantasy setting? [closed]

I'm writting a story where the big bad guy got an artifact that allow him to control dragons. In my world dragons are intelligent beings that see humans as we see ants, they mostly don't care what ...
Bloodday's user avatar
10 votes
5 answers
5k views

How big can a chicken get?

I'm working on a Spec Evo project and I'm wondering if there's a possibility for domesticated chickens, the closest living relative to the T-Rex, to regain those massive sizes. How did these chickens ...
TheGoldenBoy2188 The Coolest G's user avatar
2 votes
2 answers
301 views

Under what circumstances could this dragon-like creature carry a human? [closed]

Can a draconic or pterosaur-like flying creature weighing about 1-1.5 times that of an average human carry a human through the air for a distance of about 10 miles? If not, what atmospheric and/or ...
le_chat's user avatar
  • 61
4 votes
1 answer
90 views

Could chromatophores function suspended in fluid?

just wondering if there's any way chromatophores could function while suspended in fluid (maybe something similar to hemolymph?) I'm basing this off of mollusk chromatophores in particular, which as ...
fyshsticks's user avatar
1 vote
5 answers
186 views

Could a Creature Evolve to have a BUILT IN terrarium/nursery [closed]

In my world there is a species (who's name Im still working on) but this species has a built in nursery or terrarium. This "Terrarium' is found in the stomach where you can actively see the ...
Caliban's user avatar
  • 57
0 votes
0 answers
37 views

Can the hemoglobin be fed something besides iron to make blood a different color? [duplicate]

A bit of context here. A species of Fairies in my world have silver-colored blood, and while researching for that, I learned that hemoglobins essentially require blood to be red because they need iron ...
Nightmare's user avatar
  • 163
2 votes
2 answers
123 views

What is the optimal number of fins for maximum maneuverability of an aquatic organism?

I am deciding how many fins to give a race of aquatic "humanoids" for maximum maneuverability in the water. It is a given that they would have tail and pectoral fins because they have very ...
user1181399's user avatar
5 votes
1 answer
85 views

Insect like muscles for a human skeleton that is alive, would it be able to move in a "snappy" capatult way?

Many insects overcome the issue of limited space for muscle growth by developing "bow" muscle-tendon systems. In this system, a muscle contracts against a lock, building up energy, and then ...
Xenophile's user avatar
  • 1,332
5 votes
5 answers
2k views

Is a four-armed humanoid body-plan as realistic as a centaur-like body-plan?

Many designs for sapient aliens and sapient fantasy races alike - including one of my own - resemble four-armed humanoids; As covered in other questions on this site, a six-limbed vertebrate-analog is ...
Choroflorocarbon's user avatar
3 votes
1 answer
166 views

Is my concept for Writhing Ones viable? [closed]

My idea for an ent-like species is as follows. The Writhing Ones are a race of giant eusocial nematodes. They evolved to collaborate for the benefit of the collective and over time, colonies grew into ...
Segg Gway's user avatar
  • 113
5 votes
9 answers
2k views

Aliens with an extra-set of ears- any possible benefits?

While doing some concept drawings of an alien species for a project of mine I somehow wound up drawing a head with two sets of ears, one pair on the top of the head and the other lower with one on ...
king of panes's user avatar
2 votes
1 answer
103 views

How does a bipedal amphibian use its legs in water?

Ok so I'm writing a story with humanoid animals that developed in water but adapted to instead live near large bodies of water like lakes. They have legs and arms as well as a tail (About 5'8feet (...
something_Funny368's user avatar
2 votes
2 answers
197 views

How plausible is a Cryovenom?

In my science-fantasy world there is a creature that secretes a venom (called a cryovenom) whose proteins catalyze a spontaneous crystallization of the water inside the interstitial fluids and ...
Chromatic Realms's user avatar
5 votes
3 answers
217 views

True living fossils?

Could there be a living creature that is so old that part of it has fossilized? Here are some criteria I have for the thing to be described as a fossil: It has to be over 10,000 years old. A portion ...
user avatar
3 votes
1 answer
177 views

Designing giant space creatures becomes a popular fad in a super advanced post-scarcity society. How large can space creatures get?

This is a completely post-scarcity society. Robots and automated systems run the economy and most research. AIs are commonplace, and available to all in the human-like, completely obedient, and super-...
user107900's user avatar
7 votes
6 answers
3k views

How would a predator adapt to prey on sapient species?

In this case, I am referring to my orc-equivalent species who are closely related to the true elves, adapting to the intelligence of the elves with camouflage and mimicry, as well as tusks that are ...
Segg Gway's user avatar
  • 113
2 votes
1 answer
178 views

book lungs on a human?

I want my character (a human spider hybrid) to have book lungs along with human lungs, would there be any glaring disadvantages to this, would they be fragile be sensitive to smells? .
spiderwriter's user avatar
3 votes
4 answers
608 views

multiple retinas in one eye

is it possible to have multiple retinas, would there be advantages to this? Or would it just not work at all? I have a diagram (a shitty one) and more explanation if needed Edit: sorry for the ...
spiderwriter's user avatar
3 votes
1 answer
126 views

Gene-smiths creating super warriors. They need a secondary digestive system with a new super food

Got a faction that's making super warriors. The gene-smiths of my story managed to biologically engineer a far better human body. That's easy. This includes a far more developed digestive system, ...
Seallussus's user avatar
  • 8,370
7 votes
6 answers
4k views

No stomach, how do I eat?

Imagine a creature that through congenital diseases and mutations starts slowly losing its digestive system as it becomes less and less efficient and smaller until it is vestigial and eventually ...
Xenophile's user avatar
  • 1,332
11 votes
10 answers
4k views

Is this super soldier viable and grounded?

Below is a excerpt of a set of notes that I have compiled that is the basis for a science fiction story that I am writing. I have spent a fair amount of time trying to come up with a close/hard/sci-...
TheWookieeBreath's user avatar
5 votes
1 answer
97 views

What's an effective swimming stroke for a species with gliding membranes?

I'm writing about an alien species of lean-bodied, long-limbed bipeds who have vestigial gliding membranes stretching between their elbows and hips (female) or knees (male); see: https://...
Christopher Bennett's user avatar
1 vote
2 answers
203 views

Does a saber-toothed humanoid make sense as an animal?

The creature has the head and neck of a saber-toothed predator. It has long upper canines and kills with a strong downward swing of the head, hence its neck is strengthened to perform this task Its ...
Ichthys King's user avatar
  • 16.2k
3 votes
1 answer
128 views

How could a Massive Animal Thermoregulate?

In my world, there are massive vertebrate creatures that live on the planet's savannahs and rainforests. Alongside others that live in the frigid south pole and deep in the ocean trenches. I'm ...
New_Archaeoceti_325's user avatar
5 votes
2 answers
106 views

Growth rate of super moss

Following an answer to aprevious question I posted, this world does is filled with moss and lichen fields that make other plant growth (and crop cultivation) impossible. But after researching mosses ...
Rhomaioi's user avatar
  • 1,349
0 votes
1 answer
112 views

Designing the best Meat livestock [closed]

I have been wondering what would be the best animal to produce meat, excluding insects and artificial meat. The following questions are meant to provide ideas: Would it be better for it to be an ...
Rhomaioi's user avatar
  • 1,349
7 votes
6 answers
1k views

Labour-Intensive staple crop

I am trying to design a staple crop (preferably grain or tuber, but can be anything if necessary) that is very productive, capable of sustaining great population densities, but is also very labour ...
Rhomaioi's user avatar
  • 1,349
12 votes
9 answers
2k views

How would a creature adapted to life in a completely dark environment also have the ability to change its skin pattern like an octopus?

I'm in a bit of a pickle - I've designed a monster for a horror novel I'm working on, but I've added too many characteristics that I like for it to make logical sense. One of these features is that ...
Graham Payton's user avatar
4 votes
6 answers
2k views

How would one design a superhuman?

I'm working on a story where the MC gets his body modified like Kamen Rider's. As such he becomes stronger than a normal human. But instead of being cyborg enhancements, they are biological ...
TheGoldenBoy2188 The Coolest G's user avatar
6 votes
1 answer
301 views

Emotive Plate Eyes

Drawings included to better illustrate what‘s going on here. Also because I’m utterly addicted to doodling lately. I recently learned about the Grideye Fish, and it inspired a design for a sci-if ...
Other Worlds's user avatar
7 votes
7 answers
2k views

How can I make two hearts work?

It’s an occasional trope in sci-fi where warrior species get two hearts to better survive combat. Like the Star Trek Klingons (apparently), Halo Sangheili and the 40K Space Marines. However, two ...
Demigan's user avatar
  • 45.4k
3 votes
1 answer
103 views

Combining a electrocyte and a muscle fibre

Basically the title itself. Is it possible to combine the function of a electrocyte and a myocyte, such that muscles double up as electric organs? Electric organ Myocyte Observing the anatomy of a ...
Baron_vonCernogratz's user avatar
1 vote
2 answers
1k views

How biologically plausible is my snake species? [closed]

How biologically plausible is my snake species? The young are about 25 meters long, and the adults average 90 meters. Their proportions are like an ordinary snake’s. What kinds of advantages and ...
Zona C's user avatar
  • 143
2 votes
2 answers
97 views

Debris protection for spiracle-like breathing holes, except 'nose' hair

Follow-up from: Where to place breathing holes/spiracles on a bipedal humanoid My humanoid bipedal species and other creatures sharing a common ancestor primarily breathe through spiracle-like ...
SaintDiabolus's user avatar
8 votes
2 answers
852 views

Anatomical requirements for human speech

I am writing a species of humanoid whose skull shape more resembles that of young baboons, with somewhat large canine teeth. They are fellow primates and have a similar upright posture to humans, ...
user avatar
5 votes
1 answer
172 views

Where to place breathing holes/spiracles on a bipedal humanoid

I think the spiracles ["operculums"] of the creatures from James Cameron's Avatar are really interesting and am thinking on using the idea for the fauna of a planet. In the movies, the ...
SaintDiabolus's user avatar
9 votes
11 answers
4k views

Why are extra-dimensional monsters harmed by electricity but not physical blows? [closed]

Setting is based heavily on the works of HP Lovecraft, set in a world where mankind has to contend with extradimensional monsters known as Horrors. The Horrors vary in ability and physiology, but a ...
Demiurge777's user avatar
0 votes
6 answers
615 views

What is the purpose of mermaid growing hair on the head? [duplicate]

Mermaids are once believed to only exist in mythology or in literature but today they numbered over 9000! They are found thriving in many parts of the ocean especially the warmer water, they have head ...
user6760's user avatar
  • 48k
1 vote
1 answer
138 views

How large and tall can a bipedal, upright standing, mostly herbivorous therapod get? [duplicate]

I was originally gonna post this as one question with my previous one, but since these are two different topics I've decided to split them. Previous question: What is the best Foot shape for a Bidepal ...
TheGoldenBoy2188 The Coolest G's user avatar
5 votes
2 answers
434 views

What is the best Foot shape for a Bidepal uprighting standing dinosaur?

I'm working on a idea for a Gojirasaurus/Godzillasaurus species of dinosaur (a fictional dinosaur that was the dinosaur that would eventually become Godzilla due to the effects of radiation.) The ...
TheGoldenBoy2188 The Coolest G's user avatar
-4 votes
1 answer
94 views

Does a deep sea electric ray creature sound plausible?

I was making a species for a school project and would like to know if my idea is plausible. It is kind of barebones though. I was thinking of a deep sea electric ray that uses its tail as a sort of ...
bamaskd's user avatar
1 vote
1 answer
198 views

What chemicals could convert CO2 into oxygen within a living organism?

I'm trying to create an original species within semi-realistic biological constraints. I need a way for a giant (7-8 feet long) arthropod to convert large amounts of CO2 into breathable oxygen for ...
Brimstone's user avatar
-1 votes
1 answer
82 views

It's possible to create an inter-species university? [closed]

Imagine if we could ignore the biology boundaries, for example, allowing aquatic monsters like mermaids to stay hydrate while being on land, then it's possible to create a study place where all type ...
Jellyfish's user avatar
9 votes
8 answers
4k views

Why does a vampire have tusks?

Earlier this morning, I received 4 mummified corpses carbon-dated back to the late 17th century. Let's name these based on their unique traits: Fang, Saw, Bunny and the Boar. On closer examination, ...
user6760's user avatar
  • 48k
4 votes
3 answers
5k views

What is the size of the largest possible flying animal? Realistically speaking?

I’d like to create fantasy creatures that can fly using their own realistic physiology without magic or any kind of supernatural power. Many references on the internet mention that popular dragons ...
kmh's user avatar
  • 49
4 votes
3 answers
414 views

How could I redesign my dragons to have 6 limbs and still be able to fly?

In a previous post, I asked about dragons in my stories and how I could make it plausible for them to fly while also meeting the criteria of having 6 limbs and being 15 to 20 feet long when fully ...
Godzilla Louise's user avatar
7 votes
6 answers
2k views

What types of materials would be generated by a lava monster that has been cooled down rapidly?

I want to create a magma slime, which has a magical vulnerability to being cooled down and turns to rock easily (like when hit by a water or an ice spell). This rock can then be shattered to gather ...
Leticia's user avatar
  • 81
7 votes
8 answers
1k views

Are Liquid Brains Possible or Viable?

I'm designing an alien species roughly based on starfish. Starfish in the real world don't have brains or blood, they just let seawater run their nervous and circulatory systems, but I figure a ...
Julia Lang's user avatar

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