Questions tagged [xenobiology]

Use this tag to mark questions related to creating plausible alien biologies that may be close to or far removed from Earthly biology but within the realms of hard science.

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2
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2answers
48 views

Why might a creature appear to exhale dust rather than gas?

Recently, I have gained an interest in silicon-based lifeforms. I heard mentions here and there that if they exhaled silicon dioxide, they would exhale a fine dust or solid rather than a gas. Now, the ...
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2answers
122 views

Mach 3 animal adaptations [closed]

My organism is a bird like organism. It lives in an earth like world. My creature speed clocked at mach 1.what material is my organism reinforced in order to reach mach 1 just by flapping its wings ...
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3answers
74 views

Bio chemistry to create heavy rain [duplicate]

My creature creates heavy rain simply by coming into contact with Earth’s atmosphere, its body producing several chemical compounds to produce this effect. What are plausible bio chemicals for my ...
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1answer
65 views

My creature electricity production mechanism

In my organism electricity is usually generated by absorbing free electrons in the air and using them in combination with a proton-laced electrical sack to create an electric current ,which is then ...
1
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1answer
94 views

Hyper dense muscles

My organism has hyperdense muscles. This allows their type to generate enormous aerial force, some even able to cut things with their wings or generate G-force winds. What materials is their wings ...
3
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2answers
83 views

Could life on a planet under a red dwarf star be ammonia-based?

Instead of water-based, since liquid water would be very hard to come by there...or would it still be warm enough to find water? I haven't been able to decide if the world should be tidally-locked or ...
6
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3answers
629 views

Could alien microorganisms "infect" our own microbiome clouds and then "pollinate" us?

I'm trying to make my idea make sense. I wanted to create an parasitic/symbiotic alien species which reproduces/breeds by air or touch, which they are unaware of. They do not understand why their ...
4
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3answers
171 views

Could a mammal camouflage like a cuttlefish?

Could a mammal camouflage like a cuttlefish? The cuttlefish (Sepia officinalis) camouflages itself by contracting the muscles around tiny, colored skin cells called chromatophores. The cells come in ...
1
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1answer
101 views

Could an organism use static electricity as a weapon or defense mechanism?

Could an organism use static electricity as a weapon or defense mechanism? How would they generate the charge? How would they use the charge? Would it be able to kill or stun anything? What ...
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1answer
173 views

Can a symbiotic alien species reproduce like a virus through pollinated microscopic microbiomes clouds?

Working on a story of an alien body-snatcher invasion type of story. Basically this is a parasitic symbiotic species that evolved to reproduce through their own microbiome cloud by air and touch. ...
6
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6answers
3k views

Is it possible for a land organism to break the sound barrier via running?

Is it possible for a land organism to break the sound barrier via running? I may make an organism that can move faster than the speed of sound, however on this planet the main components of air is ...
4
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1answer
110 views

Is it possible for an animal to use nerve gas as a defense mechanism?

Is it possible for an animal to use nerve gas as a defense mechanism? I'm making a book, journal thingy and I may decide to make an animal that uses nerve gas as a "defense mechanism" and by ...
17
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8answers
1k views

Are there any useful alternatives to muscles?

Are there any realistic tissues that could be used in place of muscles in alien carbon-based life? There are some real structures that move without muscles, but they don't seem like potential ...
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1answer
78 views

Internal polar system of my creature

My fauna has a mysterious internal polar system, which enables him to create an aura of voluminous clouds of absolute zero temperatures and summon torrential ice blizzards. What material is my ...
5
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5answers
170 views

What could newborn alien offspring need to consume instead of breastmilk?

My intelligent alien species doesn't have nipples at all, nor belly-buttons. I was gonna have it that their babies are very small when born (nearly marsupial-esque, but without natural pouches in the ...
0
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0answers
44 views

Science of my creature super power

Geo-Ionikinesis: my creature is capable of generating plasmoid flames from thin air, not requiring the consumption of oxygen or combustible objects to maintain the flames. He has been seen being able ...
2
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1answer
92 views

Tough creature abilities skin

My creature has the natural ability to cause thunderstorms and heavy rain simply by coming into contact with the Earth’s atmosphere, its body producing several chemical compounds and unstable ...
3
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2answers
67 views

What would a nectarivorous animal do with waste it can't expel?

I'm reading about these species of aliens that survive solely off of nectar, honey, sugar, and sugar-based products. It's not mentioned whether or not they drink water, but it is mentioned they ...
3
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4answers
335 views

The best shape for a piezoelectric tree that harvests energy from rain?

This question is the second part of my previous question about piezoelectric plants. In summary: The plants on my world generate electricity from kinetic energy (piezoelectricity) instead of or paired ...
3
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3answers
149 views

Motility as Sexual Dimorphism

I was playing around with my planimal idea when it occurred to me that my world could reinvent fish if I simply tweaked the starting point then applied neoteny (i.e., if they grew to maturity while ...
5
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2answers
161 views

Foamy scar formation

Imagine a world, a world several hundreds of light-years away which humans have promptly colonised. These interstellar pioneers land on the mysterious planet which they call home, only for them to see ...
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3answers
94 views

Science of attack mechanics [closed]

My alien creature has ability to manipulate oceans enmasse without any magic ,no technology but only a biological method like powerful magnetic field how could it work? what materials is it ...
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1answer
117 views

Creature design help - biological chemical ways for creatures to generate blizzards [closed]

My organism has power to generate blizzards. It lives in a planet full of methane and insulating gases. My question is as to how it could generate a blizzard biologically. What compounds would be ...
0
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3answers
108 views

Extremely powerful jaws

How my alien creature jaws crush toughest metal alloys in our world with ease ? what structure could it need to produce such bite? and what materials is it possible reinforced that allows it to bite ...
2
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3answers
120 views

Plausibility of super powers - conversion of kinetic energy to chemical energy in a body of a creature

My character has ability to absorb and convert kinetic energy of punches ,or anything but only kinetic energy absorbing and convert that into chemical energy .Is this possible in this real world ? ...
5
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4answers
420 views

What adaptations would herbivores have if plants had soft cells without walls?

The plants are organisms with soft cells that don't have walls. Their flesh is soft, with a gelatinous-seeming texture (rather than the fibre-based texture common to vegetables and herbs). Most ...
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4answers
580 views

What would stop megafauna from evolving in low gravity planets?

On planets with lower gravity than earth what might make carbon bases megafaun rarer than in our own planet? The planets have a source of geothermic energy, solar energy, winds and oceans. Sometimes ...
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0answers
70 views

Supercooling biology

I want a chemical reaction that could take place in an organism that can super cool the air within that organism. In nature, there are exothermic reactions that release heat. What is a chemical ...
2
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2answers
86 views

Biological furnace

My organism evolved to burn anything .But it is basically a biological furnace .IT works by incinerating anymatter within it .It could vent emit smoke from its vents like openings .But what could ...
3
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1answer
64 views

Alternatives to taxonomy [closed]

Are there alternarive methods to taxonomy for defining creatures and their relations with living and extinct relatives?
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1answer
104 views

Attack mechanism [closed]

My creature attack was basically generated by releasing a stream of super-cooled and super-heated air at the same time which, when they interact with the addition of a strong gust of wind, generates a ...
3
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2answers
187 views

Infrared photosynthesis - how make it to work biologically and chemistry and composition of the process?

My creature is capable of obtaining energy from infrared radiation, especially the heat emitted directly by fire (essentially, the closest thing we have to a true "fire-eating" organism). ...
4
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1answer
65 views

How could my animal claws work realistically?

My animals can use its claws to crush hull of modern ships. It evolved on an earth like planet. It uses a chemosynthetic metabolism. My question is that what is the chemical composition of the claws ...
0
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1answer
73 views

Could a plant have soft cells?

Are there any issues with a plant (specifically a multicellular organism that gains energy solely through photosynthesis) having soft cells with no cell walls, similar to animal cells?
3
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2answers
89 views

Could an animal have cell walls?

Are there any issues with an animal (specifically a multicellular organism with nerves and muscles) having cells with rigid walls, like a plant or fungus?
3
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1answer
82 views

Designing the most plausible space "dwelling" planimals

I'm a scientist of a colonised alien world in the far far future, on a planet which plant-derived insects and meat trees are keystone species in their biospheres. Let's say, I wanted to genetically ...
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2answers
96 views

Could an organism exist in a vacuum just by temporarily “shutting off” and storing heat?

I’ve heard repeatedly that life in deep space is incredibly unrealistic, but I’ve had a (certainly scientifically stretched) idea for a race of ant-like creatures who live deep under the lunar surface ...
8
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2answers
446 views

At what size would a Fairy be biologically viable?

Assume that an external force nudged along the evolution of a mammal and/or insect species towards an appearance mimicking as much of humanity as possible - skin, mouth, language, fingers and thumb, ...
4
votes
1answer
57 views

Can electrosynthetic aliens function in this way?

Ok, so I've been running this idea for an alien biosphere through my head for a while now, but i'm debating how plasuable I can make this. Starting from the base, these are sedentary autotrophs living ...
6
votes
1answer
184 views

How can an animal get "upgrades" at different stages of its life?

I want an animal that gets harder to kill as it grows older, biologically immortal. Every time the animal passes different stages of its potentially endless life, it can choose to "upgrade" ...
3
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1answer
90 views

What benefits could a creature gain by developing claws on its digits?

I have an alien creature which I am currently designing, but I am hesitant in deciding whether or not it should have claws on its digits. The creature in question is a bipedal cursorial hunter with ...
0
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0answers
46 views

Biosolvents for Life

What biosolvents could, in theory, permit the emergence of life on other worlds? I have been recently looking through possible biosolvents and I have found a good number, but I am specifically looking ...
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2answers
73 views

Traits of an intelligent & civilized species that lives under a red dwarf star?

More details -- their planet is very bigger than Earth, has stronger gravity than Earth's, it has 2 moons, it's not tidally locked, and they're supposed to have evolved from social obligate carnivore ...
1
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1answer
223 views

An alien species that doesn't need to drink liquids?

Nearly all life on Earth needs to drink water to survive. But what if my alien species only needs to eat to get by?
2
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1answer
45 views

How to keep An Apex Predator Nocturnal: Or, Keeping Whitespikes Nocturnal with Giant Ants

For my story about 12,000 Americans being dropped into an alien planet's desert, I have massive pack predators (Think the Withespikes from The Tomorrow War, but not as hungry, big, or with ranged ...
2
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2answers
122 views

Biological spacesuits for humans?

Suppose that alien nanobots can alter human bodies by mutation and gene editing, such as recreating their digestive system to allow them to eat synthetics and plastics in order to produce natural body ...
6
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4answers
205 views

Would pleopod swimming scale?

Would pleopod-based swimming locomotion seen in animals like giant isopods work at much larger sizes, or would drag (or something else?) be too much of a problem? The pleopods, also known as ...
2
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0answers
67 views

Ammonia-based Nitrogenic Photosynthesis [duplicate]

How would photosynthesis work if it used ammonia as a solvent and was nitrogenic as opposed to water-based oxygenic photosynthesis? Ammonia is a basic solution so it might need some other kind of ...
3
votes
2answers
272 views

If Gastropods Were the Size of Dogs, What Sound Would Their Mouths Make?

Inspired by If Spiders Were the Size of Horses, What Sound Would They Make? but relevant to my own world. I'm thinking of a terrestrial slug or snail, the size of a large dog (Great dane or Irish ...
16
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6answers
6k views

If Spiders Were the Size of Horses, What Sound Would They Make?

I'm worldbuilding an alternate earth which has less gravity and the high oxygen levels of the late carboniferous. Thus, resulting in very large invertebrate life. In one scene, the main character is ...

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