Questions tagged [merfolk]

For questions about aquatic creatures traditionally resembling humans but with a fish tail instead of legs, or any sort of water-dwelling humanoid.

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4
votes
6answers
291 views

Could amphibious creatures ever evolve hand-like parts?

Could there ever be an incentive for a fish or other aquatic being to use simple tools, like early humans did? Would it be possible for any structure of a current water-dwelling being (for example, ...
4
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2answers
359 views

Mermaid means of transportation

Assuming we're talking about a world similar to ours with the difference of the existence of mermaids, that are fishes with an upper half visibly similar to a human's, live in the sea, can survive at ...
1
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1answer
385 views

How would the lateral line be socially perceived by mermaids [closed]

Since mermaids are fishes or at least part fish they would have a lateral line. Since the lateral line helps the mermaid to perceive their surrounding would there be any social implications on ...
4
votes
2answers
432 views

How can an aquatic race achieve cross continental communication?

Here on earth, we communicate across continents thanks to satellites. We send waves into the air and they reach your satellite dish, but under water there is a severe lack of air. Could the water ...
10
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6answers
2k views

How would a merfolks spaceship take off?

If on a water covered planet, an aquatic species such as the merfolk evolved sapience and now wishes to go into space, how would their spaceship take into account the lack of land? How would a space ...
3
votes
1answer
317 views

Would Merfolk Evolution Trade Noses for Gills?

The primary purpose of the human nose is to detect scents. This is an obvious statement, as is that the primary function of the mouth is to eat. The secondary purpose of both of these features is to ...
10
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3answers
3k views

How could mermaids talk with gills?

Recently I was pondering mermaids and was wondering how their respiratory systems work. Most importantly, how could their vocal chords continue to function? Secondly, how would they draw the water ...
11
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3answers
1k views

Underwater Sneak Attack

I have a society of merpeople that have developed sonar in order to hunt, gather resources, and in some instances communicate. They use organically created weaponry (sharpened coral, animal incisor ...
26
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7answers
6k views

How to Breathe Both on Land and Under the SEA

The popular image of a mermaid is a half-fish, half-human creature breathing fine above and below the surface. The only real-life analogy to this are the amphibians - frogs, toads and salamanders. ...
8
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3answers
507 views

How could water breathing animals have a warm-blooded level of metabolism?

In the popular merfolk topic, I always use the model of marine mammals, not water-breathing fish-like animals. They breathe air, that turbo-charged 20% oxygen fluid that enables the scale of ...
5
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3answers
506 views

How would merfolk go to the bathroom?

By Merfolk or mere-people I mean sapient beings who share have some physical traits with terrestrial humans (a humanoid upper body and opposable thumbs at least, if that's not specific enough), live ...
56
votes
21answers
12k views

Why would merfolk have hair?

A classic image of mermaids are their long flowing hair that swishes in the water. But in the scientifically realistic sense this makes none. The hair would be nothing more than a nuisance to the ...
3
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3answers
564 views

Why would merfolk evolve arms?

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 not ...
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 ...
13
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6answers
2k views

Mermaid architecture

In most representations of mermaid cities, they either live in implausible magical palaces, or in some more or less elaborate cave systems. Assuming the only difference with our world is the presence ...
18
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3answers
5k views

How do mermaids perform major surgical procedure underwater?

Suppose the mermaids share similar intelligent and technology with us, they also practise performing surgical operation like we do in hospital. Negate the issue of negligent during the operation the ...
8
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4answers
3k views

How to explain a mermaid's tail morphing into legs and vice versa?

I know a tadpole can do this transformation, given enough time, so what about mermaids?
5
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2answers
1k views

How do mermaids' ears work?

Whales and dolphins surely do not have ears similar to ours and yet they can pick up ultrasound underwater without fear of water pressure damaging the eardrum. Any idea how the mermaids with ears like ...
2
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0answers
335 views

Cartilaginous mermaid or bony mermaid best for adapting underwater? [closed]

What are the differences between a blue whale and a mega-mouth? Size and ... their skeletal structure, of course. A dolphin is extremely agile in water and is excellent at hunting for fish but it ...
12
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4answers
464 views

Would an average seawater mermaid be any larger than its freshwater counterparts?

Let's use the sea turtle and the terrapin as an example, need I say more? I used terrapin because like the mermaid which is half fish and half girl so a terrapin would serve as an excellent example. ...
4
votes
1answer
378 views

Does mermaid evolution come with buoyancy control?

I must admit this legendary or mythical creature is really fascinating and I am talking about the half fish half woman. I know most fish have the ability to control buoyancy as they can easily move ...
16
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7answers
20k views

Do mermaids lay eggs underwater or give birth to live young?

Let's pretend these magnificent and beautiful creatures are able to reproduce asexually so we can forget about their mating habits or their partners. I have yet to witness any hard shell eggs laid ...
14
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6answers
1k views

What are some major architectural designs in spaceships for aquatic beings

Like this question I'm wondering about design considerations for an intelligent aquatic species that wants to travel into space. Would they have to try and create special body suits to keep moisture ...
14
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2answers
676 views

What would out-of-water warfare look like for underwater people?

In my short story, there are underwater people who are now up to WWII technology-ish (major differences, but that level and population of society). These mermen can hold their breath for as long as ...
4
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5answers
381 views

How do merpeople track time undersea?

Suppose in the early stage of the merpeople civilization, languages are at its infancy and they have just started agriculture. We all know that calender and clock are very important for early farmers ...
28
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16answers
4k views

Cooking underwater

How would an omnivorous civilization of merpeople prepare food? Their diet would be like humans', but naturally seafood-centered. They would have typical medieval technology. How would they "fry" or "...
23
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16answers
5k views

Weapons for Mer-people

Thanks to this question on undersea fortifications, I have begun to wonder about the kinds of weapons mer-people would use when fighting one another. Normally, mermen are assumed to use tridents, but ...
50
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9answers
6k views

What would the fortifications of an underwater city look like?

Merpeople, along with other similar underwater humanoids, are often depicted as living in great cities beneath the waves. These cities have many positive things going for them: plenty of real-estate, ...
5
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3answers
4k views

Would mermaids be able to sleep?

If a mermaid was a fully mammalian creature that split on the evolutionary chain about the same time as humans did, would it be likely that mermaids could sleep? Would they rest one half of their ...
9
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4answers
376 views

Urban Aquatic Sanitation

In a fantasy world (a D&D setting, basically), how would an open underwater town populated by an assortment of mer-people deal with waste disposal? A few details: the town in question is a part of ...
8
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5answers
920 views

Would all the Merfolk die out in a short time?

I have Merfolk with tails that are just 2 legs they hold together in the water. What I want to know is that by giving them legs(and making them able to walk on land) did I make them more susceptible ...
8
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3answers
615 views

How should I create my Merfolks to make them landbased?

I want a mermaid protagonist. If I am to make this story realistic, how should the Merfolk's body structures be made to make them adaptable for both water (swimming) and land (walking, running)? Is ...
35
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10answers
7k views

Is it more likely that merfolk would evolve with horizontal or vertical tails?

Another mermaid questions I'm afraid! Fish have tail fins which are vertical, whales have fins which are horizontal. My race of merfolk are: Very active (more likely to be warm blooded) Have gills ...
27
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5answers
2k views

What adaptations would be made to a town to make it more merfolk friendly?

In my world I have a town seaside where merfolk and humans work side by side. I'm very keen to see actual interaction, not just humans on the land and fish in the sea. I want the merfolk to feel at ...