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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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3answers
134 views

How can a team of shapeshifters communicate?

There is a group of people who can shapeshift. They send out hunting parties, scout teams, etc. In a circumstance where a group of ten people can look like ten different species (one human, one wolf, ...
6
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3answers
339 views

What is the botanic equivalent to ears?

As part of a series on plant animals, plantimals if you will, I am now asking about ears. All surface life has them or some sort of equivalent to them and with good reason. Other than sight, hearing ...
22
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11answers
3k views

Biological Blimps: Propulsion

A while back, I asked this question about the plausibility of giant floating whales and received an excellent and high-scoring answer from Dubukay demonstrating that, given the assumptions that ...
4
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4answers
189 views

Aquatic lizard: Is being warm blooded essential?

Now, I know that most likely this 50 foot long aquatic lizard I mentioned in a previous question of mine would give live birth because reptile eggs and in fact any eggs really can't keep saltwater out....
11
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3answers
778 views

Gastric acid as a weapon

The dragons in my fantasy world spit fluid from their mouths when threatened, which upon contact causes a burning sensation. I could have this liquid be standard venom, like modified saliva, but I ...
5
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3answers
111 views

How could somersaulting worms evolve?

In Wayne Douglas Barlowe's classic book "Expedition" he has many strange creatures. One that intrigues the most is this one, the flipstick. It has two feet on either side and uses them to flip ...
13
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2answers
427 views

How could chocolate be as addictive as heroin?

Most of us are well aware that chocolate is already a bit addictive to human beings... maybe it's the caffeine or the sugar? But what if there were a species to which chocolate was as addictive as ...
19
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3answers
2k views

Realistic fantasy slimes

Foreword: I'm aware of the limitations of the square-cube law involved in sizing an animal up, as these limitations have been relentlessly stressed in every discussion of realistic fantasy creatures. ...
4
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1answer
101 views

Can a possible humanoid species capable of changing their sex in a crisis be the dominant species of an entire planet like us?

I had an idea of a concept a while ago. If a planet that for some reason or another had only one giant continent like Pangea, but bigger, for more distinct habitats and giant lakes assuring ...
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3answers
185 views

Anatomically Correct Huldra

Huldra are forest creatures from Scandinavian folklore, best known for their seductive natures. They are frequently depicted as beautiful women, with the additional traits of a cow-like tail and ...
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6answers
3k views

Lethal sonic weapons

Sonic weapons are frequently used by military circles as non-lethal irritants to deter opponents. My question is; could a naturally evolved organism kill, or at least incapacitate, small prey using ...
6
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4answers
480 views

Uplifted animals have parts of their “brain” in various locations of their body. Where?

Looking at the case of Mike, I realized decentralizing the brain might not be infeasible. The idea is if Horus, the brown falcon, doesn't have enough room in his skull, then why not move various ...
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4answers
166 views

How would tattoos for shapeshifters work?

So there is a species of shapeshifters who use a tattoo in a specific location on their bodies as a "belonging" indicator. Basically it is a symbol of group pride: it gives information about what the ...
5
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1answer
116 views

Anatomically correct Isitoq

This is the latest in a long series of questions I've asked on my fantasy world which contains many mythical and folkloric creatures. I won't link the other questions since at this stage the series ...
15
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4answers
750 views

Dragon forelimb placement

Most dragons (before Skyrim and GoT) had six limbs in total, four legs and a pair of wings. The question is how would a dragon's forelimbs be placed? It's obvious they have good terrestrial ...
11
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3answers
385 views

Mutually beneficial digestive system symbiotes

On an Earth-like planet, an intelligent species evolved in symbiosis with another species that lives in their digestive system and act as the microbial gut flora in humans do. What implementations of ...
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6answers
285 views

In what sort of environment might a species with biological wheels evolve, and what would they look like?

So for a thought experiment I came up with the idea of a species that uses wheels for locomotion, sort of inspired by a species shown in His Dark Materials. Under what circumstances would such a ...
29
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8answers
2k views

Plausibility of Floating Whales

Ignoring the plausibility of their evolution and sources of food, could a whale-like creature which internally consists largely of hydrogen bladders/gasbags realistically stay aloft? If these ...
4
votes
1answer
90 views

Could an entirely (or mostly) hydraulic muscular system work in terrestrial vertebrates?

In Invertebrates, Muscular Hydrostat, which is a form of biological hydraulic, is used for locomotion. On Earth, (as far as I'm aware) no system exists where hydraulics perform in conjunction with a ...
10
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5answers
674 views

Anatomically Correct Mesopelagic Aves

Recently I had a vision of a colossal underwater bird-like figure. I would describe it as follows: Roughly the wingspan of the length of a blue whale Snow-white Typical shape and feathering of a ...
9
votes
2answers
118 views

Anatomy of a walking octopoid

I have some alien creatures which are essentially land-going octopoids somewhat larger than humans. Tentacles not being a good form of propulsion on land, they have rudimentary 'legs' with one bone ...
4
votes
2answers
307 views

How much force would your fist need to strike with to punch through a human body?

Okay so, this is kind of a disgusting question... sorry about that in advance, guys. Say you are super strong, super fast, and super durable. There is a not so strong, fast, or durable normal human ...
5
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2answers
129 views

Creating a scientifically semi-valid super-soldier, addendum: Metabolism

A while back Demigan had a running series of posts about various aspects biological enhancement for the purpose of designing super-soldiers with an element of (pseudo) science behind them. You can ...
141
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7answers
14k views

Anatomically Correct Strange Women In Ponds Distributing Swords

Chaos plagues the land. In the West, the King in Orange blusters and bloviates endlessly in barely comprehensible gibberish. Perhaps he is attempting to call forth the Elder Gods? In the East, the ...
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7answers
5k views

What can I do to make blood black?

In my world I find it simplest to have iron-based blood. The problem is that iron-based blood is red, and I want it to be black. Two things come to mind; one is making the blood denser, resulting in ...
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5answers
3k views

Plausibility of squid whales

I am considering the possibility of having massive cephalopods evolving on my world and having them fill the niche of whales. I've heard about how whales have evolved to increase in size for the ...
19
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5answers
11k views

Humanoids with digitigrade legs?

I've designed an alien race of bipedal humanoids with digitigrade legs. This race's advanced scientific progress means that they use traditionally human-associated technology, or similar (such as ...
4
votes
2answers
261 views

Anatomically Correct Pikachu

We all know Pikachu, fuzzy, small rodent, with the ability to discharge electrical energy as an attack. But could Pikachu ever evolve in our world, and how would it do so? What's required: Rodent-...
12
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3answers
303 views

Would biological hydraulics be worth evolving in tetrapods?

I am working on an extraterrestrial class of tetrapod-like organisms. To give them an evolutionary advantage, I am considering biological hydraulics to supplement the muscles in the hind legs. ...
2
votes
2answers
162 views

How would a creature fly without wings? [duplicate]

I am sorry if this is not the right place to ask, but I have tried to ask this question everywhere and the only answer I’ve gotten are examples of animals like the flying squirrel and such, which does ...
2
votes
3answers
131 views

Other Mouthparts For Aliens?

What other kind of mouthparts might an alien (intelligent or non-intelligent) have besides the typical jaw with teeth or mandibles? To avoid being too broad a subject, let's assume the aliens need to ...
22
votes
10answers
1k views

Fixed-Wing Biological Flying Creatures?

How plausible are naturally-evolved, biological, fixed-wing flying creatures? Could such a creature plausibly evolve in Earth-like conditions? If so, what method would it be most likely to use for ...
2
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0answers
59 views
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6answers
415 views

Radiation shielding in the blood?

I wanted a creature that produces something in its blood to protect itself from SEP (solar energetic particles) and GCR (galactic cosmic rays). The skin of the creature is normally sufficient ...
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4answers
584 views

Could a creature like the brethren moons exist in reality?

I recently came across a game called dead space and a certain main antagonist species inside of the game. In this game you play as the main character who is trying to protect humanity from sentient ...
10
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4answers
619 views

What is the plausibility of a sentient starfish-like creature?

You all probably know what a starfish is. When a starfish is ripped in half, if each half has part of the central disk, then it can regrow into two starfish. Worms can do something similar, if they ...
8
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4answers
164 views

Retractable Tusks?

Is there a way to make retractable tusks anatomically plausible in a creature design without relying on an articulated bone structure? Basically, relying fully on musculature instead of articulation ...
22
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3answers
3k views

What sort of beak would a bone marrow eating bird have?

My world is very earthlike and I am looking to create a bird that primarily eats bone marrow. I wanted my bird to crack the bones of the carcasses to eat the marrow inside. What would the ideal beak ...
6
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2answers
207 views

What is the science of fairy flight?

Assume these homo super-dwarf aka fairy and homo sapiens come from a common ancestor, and somehow they evolved a pair of wings and can do vertical takeoff. The average adult is approximately the ...
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7answers
4k views

Physical correctness of trolls with high regeneration ability

In my fantasy world there's the race of trolls, vastly inspired by the ones one encounters in Baldur's Gate 2 (see here). Millennia ago, they've been driven underground by orcs and elves, as well as ...
2
votes
1answer
150 views

Anatomically correct Triceraton

The Triceratons are a imperialistic race of, well, space triceratops' from TMNT (Teenage Mutant Ninja Turtles). From what I can gather they breathe nitrogen and judging by their build come from a high ...
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2answers
232 views

Can my Alien species be possible with real science?

They are blue to gray skinned with four eyes, two of which can see in infrared, three fingers and toes on each appendage, and reptilian-like ears (eardrums are external), as well as a hair color range ...
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6answers
543 views

How to design an organic heat-shield?

When they started dropping from the skies.. or no, they landed. They were so similar to us, yet so different. Like nothing we would've ever designed or created - but so much like everything ...
13
votes
2answers
563 views

Life without Nitrogen

On Earth life has six fundamental building blocks for life with them being Hydrogen, Carbon, Nitrogen, Oxygen, Phosphorus, and Sulfur. (1) Those elements of help make up more complex life through ...
0
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2answers
136 views

What armor for my giant slug species to do battle at sea?

Set in the medieval period around 1400AD, the atlantean set flipper on the land of the giant slug and destroyed many acres of crops, this provocative action angered the giant slugs. These giant slugs ...
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2answers
149 views

Are 4 arms better than 2 underground? [closed]

Are creatures with 4 arms viable underground? Creatures have to be able to climb and eventually dig! Those creatures are not intelligent. They hunt and feed on dwarfs. They were nearly extinct (100 ...
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4answers
2k views

How could a human be corrupted into a demon?

In many stories, the transformation of human to demon has been interesting to think about. This of course extends to mythology: In multiple folklore, it's said that Lilith became a demon of her own ...
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4answers
211 views

How could dragons produce the energy needed to sustain themselves from gold

I'm currently contemplating ways to make dragons have a sustainable energy source in a medieval world, while still acting like the traditional soaring, adventurer grabbing, gold hoarding dragons (not ...
12
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3answers
301 views

Symbiotic Assassin Vines

I have an idea for an encounter in my world that goes like this... A weary group of adventurers are trekking through a great ancient forest. This forest is avoided by most due to strange tales of ...
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2answers
214 views

What circumstances would ensure that hybrid species of frankencats are produced in the wild naturally?

I am a mad scientist with an intelligence matching Albert Einstein and Steven Hawking, and plan to create a new species of animal. After watching Napeoleon Dynanite, widely considered by critics to be ...