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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8
votes
5answers
642 views

Would humans outcompete sequential hermaphrodites?

I want to have a species based on humans, where everyone is born as female, but switches gender to male later in their life. Assuming that transformation takes 4 years (*) hermaphrodite is born as ...
2
votes
5answers
225 views

What would the optimal beast of burden created by biotech look like?

Assume an Earth-like planet. The task is to transport a very heavy object through mostly light and some difficult terrain. The object is resting within a basket or pouch, formed like a slingshot and ...
14
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5answers
799 views

Evolution of the Giant-Eye creatures

In many RPG games, there exists a (usually evil) creature whose body mass primarily consists of a giant eye, and is usually at least the size of a human head. Sometimes it has wings and flies, ...
4
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1answer
49 views

Fluid Organisms Using Long Chain Perfluorinated Ethers

I recently heard about "self-siphoning fluids" like polypropylene glycol and was reminded of Venom. My thought process is that the cell could have polymer chains extending from its cell membrane that ...
8
votes
1answer
1k views

Bones for bigger creatures

Aye so, so I been thinking about the square cube law and such and I was wondering if say, for a humanoid or a human or some creature, to be larger than average but keep similar proportions to the ...
11
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7answers
601 views

Anatomically Correct Modular Body Plan Animals

The fixedness of body plans varies widely across different types of Earthling organisms. At one extreme, you have things like tardigrades, for which every individual of any given species has exactly ...
6
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2answers
127 views

Anthropomorphic flying squirrel, gliding capability

(maybe this should be part of the "anatomically correct" series. If so, feel free to edit accordingly, as I don't know how to add it to that list) Could a roughly human sized, human weight, bipedal, ...
3
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4answers
159 views

How do semi-sapient yeti/ogres live in the wild?

Assume that a species of bigfoot-type animal/person exists. Most of this also applies to ogres or trolls, whatever big dumb giants your particular setting has. My world's specs: They range 7-10 feet ...
13
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7answers
3k views

What are the benefits and disadvantages if a creature has multiple tails, e.g., Kyuubi or Nekomata?

Since a lot of people are already asking about multiple-headed creatures, I wonder what about multiple tails? Such as kyuubi, nekomata, etc. (I know some have asked about these mythical creatures, but ...
10
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5answers
249 views

What use would controling a pack of cobras be in a world with powerful super beings?

I had an idea to have a character that could control cobras, mainly for the visual idea of a character wearing cobras, with them slithering around parts of the body, hidden under clothes or showing. ...
1
vote
1answer
148 views

What is the maximum equilibrium temperature that a mammal could evolve to tolerate?

Mammals live in some fairly extreme environments, but the most heat-tolerant ones all seem to cheat: e.g., they dig burrows to stay cool during the day and come out at night, avoiding the heat, or ...
24
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15answers
6k views

What organs or modifications would be needed for a life biological creature not to require sleep?

I mean literally not sleeping for the rest of their life, not like giraffes that only require short rests, or dolphins that can sleep with half of their brain at a time, or like otters and sharks that ...
7
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2answers
169 views

Would it be possible for my fantasy creature to have black blood?

A friend of mine has a race of creatures in her headworld and has been wondering about a biological answer to justify the color of her race's blood even though magic is a bit sprinkled in there. One ...
23
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5answers
3k views

Creatures that intentionally blow themselves up

How could a creature explode itself? Why would it? We see example ideas of these all the time (Scourges, creepers, etc.) but nobody ever said how or why a creature would intentionally explode. I am ...
15
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7answers
6k views

What could make an insect race intelligent?

TL;DR: I want a society which behaves as a hive. Is it plausible and how to achieve this? The setup: Different planet in our universe. In other words: Normal, physical rules apply, there is no magic ...
6
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5answers
136 views

How Would Weightless Creature Steer Itself In The Air? (Can It Sail?)

Gravity does exist in this world, and so does air and clouds. But this creature only has enough weight to stay in the air without falling or being lifted up. It's big like a whale and it does have ...
8
votes
1answer
129 views

Can a feathered wing be also compliant?

So, to quote pterosaur.net: Unlike the wings of birds, the wings of pterosaurs would have tended to change shape under aerodynamic load - something often referred to as 'passive cambering'. ...
3
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3answers
298 views

Bioluminescent microorganisms in everything

Is it possible for a bioluminescent organism to be so pervasive in an environment, that creatures who eat it (because it's in plants for example) also start to glow? It doesn't have to be a bright ...
6
votes
4answers
204 views

Anatomy of a chinese serpentine dragon?

In our world there are two species of dragon that took different evolutionary paths due to environmental pressures. The first of them, called smaugs, are as large as a quetzalcoatlus, with a wingspan ...
7
votes
4answers
276 views

The right size for dragons

Note: size here denotes the physical dimension(s) taken up by the creature in a natural, idling posture One of the many fantasy tropes that make me want to Fahrenheit 451 contemporary fantasy ...
9
votes
4answers
199 views

How would a quadruped walk with one limb longer than the rest?

I have a (digitigrade) quadrupedal alien creature with one of it's front limbs having a longer metatarsals, I'm trying to visualise how it would walk with this deformity for an animation. I'm having ...
4
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3answers
256 views

Is there a reason that females passing on more than 1/2 of their genetics to the child would be unlikely to evolve?

On the earth today most animals use a two sex mating system where male and female provide the same amount of genetics to the resulting offspring, despite the fact that in many cases the female ...
17
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13answers
7k views

What would a biological creature need in order to see into the future?

Inspired by the Paycheck and Minority Report movies. So far as I can tell, physical time travel is impossible for humans, and so I searched to see the future possible scientific or theoretical ...
10
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2answers
176 views

What metals other than calcium can be used to create alien bones that won't also engender a human-toxic environment?

Edit: Okay, truth be known that this question was part of a set of 5 related questions that I was recommended to break up into individual posts (in their original form, the comments had no trouble ...
10
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2answers
687 views

Could a hexapodal bat actually fly?

Sequel to this question. Basically, I've been designing an intelligent avian race based on bats. After reading through some of the answers for the linked question, I've decided that these bats will ...
2
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6answers
523 views

Could a tetrapod evolve from a hexapod?

I'm thinking of an alien alien world that has a vast biosphere. Now the creatures of this planet have evolved to be hexapods though there are a few creatures that are tetrapods (only have four limbs). ...
22
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13answers
7k views

How could a self contained organic body propel itself in space

How could an organic, plant-like, intelligent organism move around space? Assuming that the body is inside a small meteoroid and that outside of the meteoroid is covered in tessellating leaves to ...
12
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4answers
2k views

Would the diet of a human have to adapt if he suddenly had a ~1 metre long foxtail?

If I genetically modified a human to have a foxtail of roughly 1 metre length through the use of handwaved genetical engineering - would this have an effect on his diet? Of course an additional ...
23
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10answers
2k views

Earth, Wind, and Water: Naturally Navigating All Three

There are few things cooler than a fish that can walk on land, or a rodent that can fly, but despite all the amazing adaptations evolution has seen fit to create upon this Earth, I cannot think of an ...
4
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1answer
230 views

what the aquatic creature need in order to live or survive in my acid water?

inspire by xenomorph acid blood from alien movies. so the water either rivers, lakes, and oceans in my world or some of the regions is highly acidic because some of the dirt or stone minerals content ...
8
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2answers
243 views

The Biology behind a slime that uses hydrofluoric acid to disable and digest prey.

So I've been working on a low magic world where magic is actually just another form of energy that can be actualized, similar to alchemy in Full Metal Alchemist. Although development has taken a ...
3
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3answers
333 views

Could a self-aware bacterial supercomputer start its own ecosystem?

I know A LOT of this gonna be a stretch and that I'm probably misunderstanding or exaggerating current real-life trends in science, but that's kind of why I'm asking the question. We know it's ...
12
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4answers
307 views

Anatomically Correct Slinky Worm

Despite the wide variety of movement strategies employed by Earthling animals, up to an including curling their bodies into circles and rolling, there is one mode of locomotion that is glaringly ...
53
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12answers
12k views

How can a fish that explodes by itself prosper enough to reproduce on a grand enough scale to persist as a species?

In the underwater survival game Subnautica there is a fish called Crashfish that, upon being too close to it, swims out of its plant to chase you and eventually explode. The explosion leaves no ...
16
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4answers
2k views

How to let a Whale urh… fly? [duplicate]

I have read about flying sharks that hunt birds and great monstrous flying whales, so I would like to know how a whale could conceivably start 'flying' in real life. I'm gonna just set Blue Whales as ...
1
vote
1answer
155 views

Can I use a living organism as exotic matter for interstellar travel?

Would it be possible to use a living organism as unobtainium for interstellar travel? Would it make any sense? The story I had in mind would use them as the main bad guys seeking vengeance on those ...
9
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4answers
551 views

Anatomically Correct Whomping Willow

The whomping willow is a fictional tree from the Harry Potter series of books. It is a magic willow that can move its branches to punch people who come close to it. Small animals such as cats and ...
5
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2answers
117 views

Novel Alien Bacteria / Fungus Causing Rapid Mutations

We've seen it throughout media before, a crazy mutation that creates zombies, rabid people, giant spiders, etc. I'm spot checking how crazy I can get with this short story I'm writing about a bacteria ...
8
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5answers
227 views

Why would a blind creature evolve display features?

I'm thinking of a predatory creature that lives deep inside large caves. Because this environment is so dark, the creature's eyes have disappeared through evolution since the creature relies on ...
10
votes
3answers
384 views

What would a Pegasus actually do with its legs while flying?

The question is just as simple as it sounds. Would it tuck them under like a bird? make running motions like it does when running on the ground? some other movement that actually aids in flight ...
5
votes
3answers
134 views

Size of a litter for a carnivore with a high rate of death

So, I'm designing an alien race/civilisation of carnivore. I was thinking of a very aggressive specie, who is both the alpha predator of his world and his own main cause of death. Basically, a lot ...
4
votes
1answer
275 views

Pros and cons of having digitigrade and plantigrade legs?

I have created a humanoid that can switch between digitigrade and plantigrade legs. It is able to do this via special bones in its legs that it can lock in place without hindering its movement but ...
13
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8answers
454 views

Plausibility Check: Kite Trees?

Disclaimer: This question, unlike my other tree related question, was brought about by pure whimsical daydreaming. I also threw the term "evolve" around a lot, I should clarify that what I asking is ...
21
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4answers
5k views

Would a carnivorous diet be able to support a giant worm?

In my fantasy world there is a large valley. At the northern end lies the 'endless desert' called the "Sea of Glass" due to its shimmering sands. Within these deserts live great wyrms that swim ...
3
votes
4answers
177 views

Why would a venomous snake squeeze its threat non-lethally?

This is a key part of my snakebite mystery story, which I am thinking of making part of a medical mystery series. I have been told that it actually is more life threatening to the snake for it to ...
5
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4answers
240 views

Alien Mammal-Like Ears

So I’m trying to design my alien life around the pressures they might face just like earth’s wildlife, and most things I’ve made plausible life that is similar to ear but not giant dinosaur cats. The ...
8
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2answers
375 views

Anatomically Correct “Stranger Things” Mindflayer's Monster

Background, with potential spoilers: In the Netflix show Stranger Things... If we skip the psychic stuff, there's still a pretty interesting creature there. To qualify as a Mindflayer monster, an ...
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vote
5answers
359 views

Anatomically Correct Monsters, Incorporated

In the world of Monsters, Inc., the titular monsters have wildly varying morphologies and abilities, but they nevertheless all seem to be members of the same species; after all, if it was a multi-...
6
votes
3answers
203 views

Anatomically Correct Hunter from Needle

Hal Clement's novel Needle was revolutionary in featuring a non-parasitic alien lifeform capable of inhabiting a human body. Specifically, the Hunter in its independent form is a gelatinous mass ...
12
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9answers
4k views

Would evolution select for mermaids without breasts?

So ignoring all the other hydrodynamic inefficiencies associated with sticking a human torso on a fish body, let's just worry about those most distinct of human female features, breasts. The problem ...