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For questions about the mechanical processes that allow organisms to live, including respiration, consumption, excretion. Focus on shapes of body parts and connections between parts.

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1answer
141 views

Would wide hips be a wiser evolutionary trait for digitigrade, biped humanoids?

I was asking a deviantART.com artist why they often draw their anthros and furries with wide hips regardless of gender, and they told me this (copypasting): "I'll see if I can't whip something up for ...
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2answers
124 views

What would the size constraints on my creature be?

Context This creature right here is one of the decedents of placoderms that that transitioned from rivers to land. The got onto land during the Middle Devonian and remained isolated from all other ...
5
votes
5answers
273 views

Why would a biped evolve into a monoped?

Say that you have a medium-sized, bipedal, vertebrate-like creature. It no longer has the need to have arms, so they atrophied until they disappeared entirely. Now imagine an animal that shares ...
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1answer
114 views

Biological padding?

Designing living creatures is hard, so I came up with a generalized idea to speed up the process in the future: Biological padding is a spongy structure made of spider silk and filled with either ...
5
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2answers
128 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 ...
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4answers
115 views

Are Extraterrestrial's pagoda trees plausible?

In the National Geographic mini-series Extraterrestrial or Alien Worlds, they featured a hypothetical gas giant moon called the Blue Moon. The Blue Moon orbits a binary star, has a very dense ...
4
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1answer
95 views

Would a nictitating membrane, eyelid AND eyelashes get in each other's way in the same eye?

Or would that eye be the most well-defended from external debris and whatnot in the entire world? Cats seem to get by just fine without eyelids and a membrane but no eyelashes...likewise humans with ...
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3answers
130 views

What could a person able to re-arrange their muscle strength accomplish?

Suppose there is a type of person who is otherwise a normal human, but can temporarily transfer muscle strength from one part of their body to another. Whether this occurs through mutant genes, ...
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2answers
203 views

What is the best body plan to allow for giant size in a terrestrial animal?

My question is rather simple; assuming optimal atmospheric and planetary conditions, what body plan would be able to support the largest plausible land animal? To split the above question into a ...
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2answers
141 views

Creating a scientifically semi-valid super-soldier, part 9: Temperature control

Previous questions here: Creating a scientifically semi-valid super-soldier, part 1: Skeleton Creating a scientifically semi-valid super-soldier, part 2: nervous system Creating a scientifically ...
7
votes
4answers
216 views

Creating a scientifically semi-valid super-soldier, part 8: Communication

Previous parts here: Creating a scientifically semi-valid super-soldier, part 1: Skeleton Creating a scientifically semi-valid super-soldier, part 2: nervous system Creating a scientifically semi-...
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5answers
3k views

What would be the disadvantages and advantages of having four fingers instead of five?

Animated creatures generally have four fingers (including thumbs). In a real-world context what physical possible consequences would result in having only four (or 8) fingers? Physiologically, what ...
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4answers
150 views

Using science, how could an animal achieve lift/flight by using pressure?

Say for instance we had a humanoid creature. how would they achieve flight by taking in a gas then expelling it at a greater pressure from a point on their body like the feet, back, or hands?
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2answers
109 views

What would be the physiological/anatomical adaptations of a 50 metre sea serpent?

In my last question, How large could my sea serpents be?, I asked what length would be a) possible and b) necessary for a whale-eating sea serpent. My sea serpent is a constricting predator* in a ...
2
votes
1answer
76 views

Feasability of having a voice modulator bioengineered into vocal chords?

I'm writing a story and I was wondering on the feasibilty of having a set of bio-engineered vocal chords that would have a voice modulator built in to help disguise the characters voice, would it be ...
8
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2answers
283 views

Are my wing-walking griffins viable?

This is the third question in a series of such for my worldbuilding project that deals with plausible fantasy creatures. Previously, I have pondered cockatrices and hydras, but now we move on to ...
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3answers
211 views

Creating a scientifically semi-valid super-soldier, part 7: Hearing

Previous parts here: Creating a scientifically semi-valid super-soldier, part 1: Skeleton Creating a scientifically semi-valid super-soldier, part 2: nervous system Creating a scientifically semi-...
0
votes
1answer
149 views

Anatomically Correct Opticoid

Description An Opticoid is an alien species from the tv series Ben 10 and is named and known for having green eyes with slits all over its body except for its head where there are two large bat-like ...
0
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1answer
66 views

non muscular rapid color changing

I have this alien race of amoeba-like creatures about the size of humans with the ability to morph their shape and move by constantly making and dissolving muscles by manipulating their membrane and ...
10
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6answers
265 views

Creating a scientifically semi-valid super-soldier, part 6: Radiation protection

Previous parts here: Creating a scientifically semi-valid super-soldier, part 1: Skeleton Creating a scientifically semi-valid super-soldier, part 2: nervous system Creating a scientifically semi-...
3
votes
2answers
170 views

Amoeba Skeletal Structure

So I am making these giant(human sized) amoeba-like aliens and to have something this big it requires a skeleton to maintain shape and to support its body but also needs to be flexible so it can do as ...
5
votes
1answer
280 views

Creating a Scientifically Semi-Valid Pseudo-Arthropod Primate Part 1: Pseudo-Dragonfly Wing Rib Muscles

Background As a parody of the super soldier questions and as an efficient way of organizing these questions I will now start this series of questions about Pseudo-Arthropod Primates. Questions from ...
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1answer
62 views

Pancreas Chitin

Okay so I am making these arthropod looking humanoid mammalian species, so think of a human with armadillo armor and jointed sloth arms. And I have heard that the pancreas produces Chitin so my ...
4
votes
2answers
240 views

Creating a scientifically semi-valid super-soldier, part 5: Heart and circulatory system

Previous parts here: Creating a scientifically semi-valid super-soldier, part 1: Skeleton Creating a scientifically semi-valid super-soldier, part 2: nervous system Creating a scientifically semi-...
16
votes
3answers
249 views

Anthropomorphic Animal Head Support

So I have struck another snag in my draft involving my character's biology. It is an anthropomorphic animal related to the pantherinae subfamily. So far, its physical structure resembles that of a ...
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votes
20answers
7k views

Advantage of luminescent eggs?

For example, a quote from one of the Witcher 3: Blood and Wine's side quests says The eggs themselves are a sight to behold, luminescent. The man (hologram) is referring to giant centipede eggs. ...
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8answers
432 views

What's the most plausible way to bio-engineer an underground ecosystem, without photosynthesis, to produce oxygen?

Here's the full question: What's the most plausible way to bio-engineer an underground ecosystem, without using photosynthesis, so a mine system would not need an active air exchange system? (It was ...
2
votes
6answers
285 views

What sort of legs would a 1-ton pig neeed to support its body weight and move in short bursts of speed?

I recently asked how big a giant pig would need to be in order to carry a 10 foot tall (3.0 meters) and 272 kilogram (599.66 pounds) humanoid (wearing plate armour or an ankle-length cuirass ...
11
votes
10answers
789 views

Neutral, science-based Undead

I'm looking for one or more biological processes that could be bolstered, changed, or introduced to a human to create a severely extended lifespan, ideally requiring death first, in order to best ...
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4answers
331 views

Creating a scientifically semi-valid super-soldier, part 3: Physical shock resistance

Part 1 here: Creating a scientifically semi-valid super-soldier, part 1: Skeleton Part 2 here: Creating a scientifically semi-valid super-soldier, part 2: nervous system In most movies, comics and ...
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votes
2answers
105 views

If humans adapted to survive car crashes what would our physiology be like? [closed]

A good scenario for this situation would be roads got more dangerous and cars were not improving for more people to survive car crashes. in this world they became more common. what would our ...
3
votes
2answers
855 views

Creating a scientifically semi-valid super-soldier, part 1: Skeleton [closed]

Sometimes you just want to have a dragon, giant scorpion or a superhuman that has a bit more realism behind it than "it's strong, fast, can jump extreme distances despite it's weight and it's smart, ...
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5answers
276 views

Swimming in the rain?

This question is inspired by salmon swimming up waterfalls. I am aware that it is an entirely different thing, but I felt that it was worth mentioning in understanding the question. “What would need ...
11
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8answers
1k views

Building The “Perfect” Mount

Horses are not perfect for war but they are still very good when trained. How to make a horse better for the following conditions? be stronger in the act of charging infantry and other horseman ...
2
votes
4answers
185 views

biological cybernetics for human prosthetics

So in my book the main character loses his left arm (all the way to the shoulder) and is giving a prosthetic arm but I want the arm to be bio-cybernetic like I was thinking that the metal (can use non-...
7
votes
5answers
974 views

Humans with a scorpion-like tail?

I'm trying to create a new race of humanoids that are in appearance almost identical to humans with one exception: They have an extension of their spine protruding from their back, much like a tail. ...
7
votes
3answers
127 views

How can perpetually-gliding lifeforms develop space travel?

Malgrovian gliders inhabit the middle layers of the atmosphere of Malgrov, a gas dwarf. They spend most of their life gliding, preying on giant balloon-like floating lifeforms. When they get older, ...
2
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2answers
88 views

How would magic controlled insects go about repairing a magical scarf?

About the Question The end questions are about the mechanics of the repair work itself for certain parts of the scarf. Everything else should be explained below. Location On one of the worlds of a ...
3
votes
3answers
324 views

How could a human without bones survive?

My novel is a fantasy, so it doesn't need to be completely accurate, but I still want a (somewhat) plausible solution. My world is a steampunk inspired Earth-like planet with magic. There are people ...
5
votes
3answers
768 views

How strong would John Carter really be on Mars?

Let us assume that in the future, there is a formerly human colony on Mars that has existed there for some centuries. The people of this world have had time to adapt to the lower gravity over at least ...
5
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3answers
618 views

Are single-biomed planets (like in *Star Wars*) possible? [duplicate]

I know this may seem like an obvious no, but with the newest Star Wars movie just released, there is a mineral-rich planet called Crait which I have seen make a few debates about whether or not this ...
4
votes
3answers
390 views

How to make selective healing?

Selective (Prioritizable) Healing What is it? It is the ability to choose which wound do you want to start healing first, or at least, which wound do you want regen faster slowering the rest of ...
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votes
3answers
105 views

What is the plausability of biomechanical muscle mass?

So in my story, the protaganist has had an accident where most of his muscles have to be rebuilt. The medical staff do a procedure in which they give him cybernetic muscles, and I'm thinking that they ...
1
vote
1answer
51 views

Name for standard, non-cellular mechanisms? [closed]

Let's assume a dichotomy of standard machines versus cellular machines. Today, most machines are non-cellular, and are made up of large, specialized parts that themselves are not made up cells, and ...
2
votes
1answer
211 views

How large could a frog be?

While Prionosuchus and other large temnospondyls are definitely imposing and capable of causing mortal harm, they still adhere to a distinctly salamander-like profile. Anurans (relating to frogs or ...
4
votes
5answers
351 views

Multi-purpose Fictional Chemical Element Needed

I am looking for some guidance in creating a chemical element. I want to know if it is scientifically plausible for a single fictional element to do all the things I need it to, even if at a stretch, ...
2
votes
6answers
280 views

Food sources for engineered spaceborne life forms

Years ago, I was tinkering around with the idea of an engineered life form which could survive the vacuum of space and be made into a starship. I have since given up on the idea, but curiosity is ...
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1answer
202 views

Flying Stingrays [closed]

In my story, a member of the highly advanced alien civilization (let's just call them Annunaki) decided to make a species for his own protection, the Wingrays. His proposal The Wingrays are (just ...
1
vote
1answer
101 views

Gripping with radial palms

How would gripping of different objects, such as rocks and sticks, work for an organism that has radially symmetrical hands, resembling starfish in shape. They have four to five digits, depending on ...
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vote
2answers
154 views

Why would someone want to be eight feet tall? [closed]

Let's imagine that through the application of advanced biotechnology and cybernetics, humans in the 23rd century have created a sort of machine mitochondria that lives inside a person's cells and ...