Posts tagged xenobiology
So, if you haven't looked at my previous question: Would a sentient species be able to thrive when mating means the death of the male partner? Please do, as the information in it directly pertains...
I've designed a creature for my alien world that is a large apex predator known commonly as a wraith. It lives mostly in dense jungle and forest and uses stealth and ambush to catch its prey (it ca...
So, I have an aquatic humanoid species that I want to be able to use echolocation. They are extremely similar to humans,with some minor differences, like gills. (The reason I include this tidbit is...
Merfolk can be easily described as humans with the lower half of fish. On this site we have discussed; How their tails work, How they sleep, And how they hear. But there is one question that has no...
Suppose we had reached the moon and found it to be habitable. It was big enough to support an atmosphere, albeit a thinner one than the Earth has, and at some point in the past few hundred million ...
I have this idea of homicidal alien beings that upon death (after their body ceases living and begins to decompose) release enough poisonous gas into earth's atmosphere to wipe out all life on the ...
I came up with an alien species that has the following reproductive life: They hatch out of eggs, tended by their mothers, and by the end of the first year (about two Earth years long) they are ...
I know water would be out of the question, but what about liquid nitrogen or liquid hydrogen, Would silicon work instead of carbon?
I know about humans, and how we have adapted to different eviornments with skin and hair color, but I want something a little bit different for my creatures. They are amphibious humanoids, and live...
Why would a creature that lives on the surface of a planet evolve limbs that can bend at many points (like a tentacle or elephant trunk) and still end in some sort of hand-like appendage?
I'm fond of a insect race in a videogame, and want to base a race off of them, or write a fan fiction, but they flex a bit in the torso, and I wasn't sure... Hope this makes sense. :) Animated pi...
I have an alien species that is my pet project. Now I'm to reproduction, which I have a specific idea for, I'm just not sure exactly how it works. My creatures are aquatic, and everything goes on u...
Essential Question : what adaptations can be made to a crawling vine that would allow them to obtain as much energy as a top level consumer if the vine was on a planet 1 au from a sun sized star?
Purely hypothetical and kind of creative quesiton. My idea is an alien humanoid-like civilization (and basically everything alive on that planet) which uses methanol/ethanol or other alcohol as a s...
Imagine that, without any aliens having been ever found, we get to a point where we can build sub-atomically precise simulations of reality, spanning at least something the size (if not the likenes...
Answer this question: "What would happen to a high-pressure creature in a low-pressure atmosphere? The hypothetical creature has evolved on a planet with an atmosphere that's much more pressuris...
The hypothetical creature has evolved on a planet with an atmosphere that's much more pressurised than that of Earth. It's humanoid in appearance, in that it has two arms and two legs as well as a ...
The title is a bit different to the question, but there's a reason to that. I am currently in the worldbuilding stage of creating an alien planet, mainly the wildlife, and I may have run into a pro...
Would a creature similar to semi-aquatic slime mold living on a mostly freshwater planet with shallow seas be able to build technology to the extent that modern humans do? Assuming that each indivi...
The brain is 1 major developmental difference between us and these humanoids. These humanoids start off with larger brains to begin with and so brain development in the womb happens at about the s...
I was thinking, and I came up with an alien race, which enthralled me. I was just wondering if these creatures would plausibly evolve this way. (Info dump time These aliens are humanoid. While t...
All multi-cellular life as we know it is composed or eukarotic cells -- cells with a nucleus. Some single-celled organisms are eukarotic, some are prokaryotic (cells without a nucleus, such as bact...
I was reading about the rogue planet PSO J318.5-22 which is thought to have molten iron rain and things like that, and I vaguely remembered from uni that almost all iron mixtures have a slushy eute...
Hey guys so I've posted on this site before and I've finally made an account so I'd like to ask again about mine and my friend's webcomic WIP. Biology wise, I've made three main groups of animals, ...
Radio Thinkers Creatures that communicate by biological radio pops up in science fiction occasionally and it's a fun idea. However, there are some practical concerns with regards to evolving a ra...
Basically, it starts as a variation on the seahorse, once the ova are fertilized within the mother the embryoes are drawn back into the father who then carries them to term (there's actually a seco...
Hydrogenic photosynthesis reduces methane and water to build biomass ($\text{CH}_2\text{O}$) and releases hydrogen: $$\text{CH}_4 + \text{H}_2\text{O} + \text{photons} \to \text{CH}_2\text{O} + 2\...
Mycolaria is my working name for an alien planet featuring a much more visible role for fungi of all kinds, large and small. There are also animals and plants on this world. This is the second in a...
