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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Anatomically Correct Avatea

Avatea is a deity of Cook Islands Mythology. They display a mixture of human and piscine traits: They have two heads, the left one like a fish and the right one like a man. Their body is half fish and ...
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4 votes
5 answers
3k views

How do you gag a fish-person without tape?

The fish-people are hybrids of fish and humans: They have bodies akin to standard teleost fish, such as carp or salmon, with a face, brain, and throat like a human. While it would be quite easy to ...
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-2 votes
2 answers
81 views

Anatomically Correct Oannes

The Oannes is a being from Mesopotamian Mythology. It is a hybrid of a human and fish, with a unique anatomy They are are humanoid in posture, with a body, tail, and head like a fish, and the arms and ...
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3 votes
2 answers
106 views

How would people muzzle a siren? What would it look like? [closed]

My sirens have mostly humanoid upper halves, and since it's the Victorian era, surgically altering their vocal cords isn't really an option. These are pets for very bold people, but very dangerous if ...
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6 votes
2 answers
163 views

Merfolk Beauty Products (part 1: makeup)

What could an underwater civilization use to produce makeup and cosmetics? Considering that: The merfolk's tech level is the same as ours (they have fire and metallurgy thanks to magic) Makeup ...
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  • 61
5 votes
1 answer
131 views

Plausibility of Cheek Gills

Merfolk gills, when not set into the chest, can be placed within the cheeks Specifically, they are found above the angle of the mandible, near the back of the jaw-region. They are structured like in ...
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2 votes
2 answers
114 views

Plausibility of Ear Fins

Many depictions of merfolk show the ears as a set of ray-bearing fins, resembling the pectoral fins of fish However, this doesn't make much sense from an anatomical perspective; the pectoral fin is ...
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2 votes
1 answer
118 views

How would reverse merfolk navigate on land?

A reverse merfolk is a creature with the head and chest of a fish with the legs and lower parts of a human. While they would be able to walk around by their legs, they may have issues with their ...
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6 votes
2 answers
196 views

Would mermaid be able to leap higher out of water with a Fosbury flop?

In a high jump sport on land, athletes would adopt Fosbury flop technique to cross over a bar. This bar is the indicator of how high an individual can jump with reference to the ground, so I wonder ...
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  • 46k
7 votes
2 answers
201 views

Could this gill system realistically develop?

Often, aquatic humanoids and other species are depicted with a set of shark-like gills in the side of their chest. Specifically, the gills and gill arches would replace the lungs and ribcage under the ...
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4 votes
3 answers
228 views

Would merfolk kept in captivity suffer from lack of oxygen?

In my story, in the midst of a human-merfolk war, merfolk are captured by humans, and are periodically de-scaled (they grow back) to sell their colorful scales as jewelry. In these farms, the merfolk ...
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  • 2,503
6 votes
5 answers
399 views

underwater calendar for merfolk?

In the world I'm creating, I have merfolk who have human-level intelligence, live in pods/tribes of 10-50 (but are connected to each other and trade and exchange information frequently). Most worship ...
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  • 121
9 votes
7 answers
1k views

What materials would merfolk use to craft armor?

What materials in the environment could merpeople use to make armor? The merpeople live in the mediterranean sea and have contact and trade with humans who could provide resources and craft the armor ...
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-3 votes
2 answers
165 views

What is a realistic psychological response to magic? [closed]

So I think about this a lot based on seeing things like clichés or unrealistic reactions - how would someone actually react to magic? In some media, the character is in unbelievable denial - you've ...
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  • 2,503
2 votes
2 answers
168 views

How would an underwater city be structured? [closed]

Let's say there is an underwater civilization of merpeople. They were able to develop medieval technology (approximately, since an underwater civilization would develop differently than an above water ...
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  • 787
1 vote
3 answers
170 views

How would humanity fight against a neolithic aquatic race

In the early 1950s an aquatic race called merfolk for simplicity sake was discovered. But they weren't friendly in order to scare them off the crew that discovered them fired off a warning shot which ...
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  • 29
5 votes
1 answer
107 views

Could these mermaids have side-fins?

The mermaids are a species of ape that are adapted for the sea. One of these adaptations is that the legs are fused into a single finned 'tail', as in sea-lions. However, I'd also like them to have a ...
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7 votes
4 answers
203 views

Most effective gill design for a humanoid?

In the distant past, Water was a world much like Earth--but all of its continents have been eroded away, such that its surface is entirely covered in, well... water. While many of Water's ancient ...
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5 votes
2 answers
196 views

Would merpeople contract diseases from land?

In working on the merpeople for my story - very basic, classic merpeople - they are humans underwater with fish tails. I've questioned whether they would contract diseases. It seems that they would in ...
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  • 2,503
-1 votes
1 answer
118 views

What are the faceless mermaids like on the inside? [closed]

The faceless mermaids have 2 eyes, on the back of their shoulders. They also have an upwards-facing beak in their chest, which is used to eat. Their head has no eyes or mouth, but does have a nose ...
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0 votes
2 answers
124 views

How could these sirens move on land?

The siren is an amphibious humanoid. They are mostly like humans apart from the limbs: Their arms are large and flipper-like, being used to swim underwater. Their leg is short, and they always have ...
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2 votes
4 answers
193 views

What is the most vertebrate way a mermaid's bone structure could develop in an embryo?

The mermaids are human down to the knees. Their thighs are fused together as in sirenomelia, to form a single structure. However below the knees they have a fish-like tail with vertebrae and the other ...
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3 votes
0 answers
107 views

What is the function of this limb system? [closed]

The Globadob is a strange fish with a strange anatomy. Most notably is its lower half, which features a structure that is not seen in any other animal This structure is composed of a ring of legs, ...
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4 votes
4 answers
264 views

How can I make my underwater crops more aquatic in nature?

In my fantasy novel, I'm writing about a society of merfolk. They're well developed and have city states, but they don't have very good farming practices. As part of the story focuses on this, I am ...
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  • 2,503
3 votes
1 answer
121 views

Could you build a depth charge in the early 1800s?

My novel taking place in an early 1800s setting (circa 1800 - 1850) has a human versus merfolk war. It started with disputes over fishing resources, but now has escalated, for the merfolk, to a fight ...
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  • 2,503
14 votes
8 answers
3k views

Could merfolk cook without air by using electrical heating?

Basically title. You can't light a fire to cook your food because everything's all wet and there's no air you see. But can you take some raw meat, apply an electric eel to it for 20 minutes, turning ...
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13 votes
8 answers
3k views

How would WW2-level navy deal with my "merfolk"?

The abovementioned fictional race aren't exactly merpeople from fantasy, but I call them like that just for the sake of convenience. Rather, they're semi-aquatic humanoids, who are really good at ...
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  • 317
4 votes
8 answers
786 views

How do you tie up a mermaid?

How could you restrain a mermaid's tail with rope so that they couldn't swim away? Let's say that the tail is like a fish, and is roughly the size of a pair of human legs
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4 votes
1 answer
102 views

How can I improve my pressure based magic system?

My fantasy world Treyidal tentatively has a pressure based magic system. This started as an outgrowth of the inability of my merfolk to do a whole lot, and this is my hopeful solution to construction, ...
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  • 2,503
6 votes
3 answers
231 views

What infrastructure would be needed to "farm" merfolk scales?

In the world of my story, merfolk have been captured by humans to serve the cruel purpose of providing their colorful scales to make jewelry, chandeliers, etc, with their colorful scales. I'm not ...
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  • 2,503
0 votes
1 answer
141 views

Could a creature swim using an organic dress?

Could a creature swim through water (faster than the average human) using a fin that wraps around the body like a dress or skirt? Specifically, the fin would surround the rear end in a circle, with a ...
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3 votes
1 answer
85 views

How would merfolk sustainably magically grow coral?

This question is a modified version of my earlier question, where I will clarify some of my worldbuilding. In my world, merpeople are capable of manipulating coral by making it grow at a faster rate ...
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3 votes
2 answers
109 views

What headwear could a triton wear?

The tritons are a species of aquatic animal with a rather unique appearance. Their head is human-like, apart from the following: They have equine ears, that are positioned at around eyebrow level ...
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-1 votes
1 answer
55 views

How could a triton be ridden?

The tritons are a species of aquatic animal with a rather unique appearance. Their upper body is mostly humanoid, apart from the following features: They have equine ears, that are positioned at ...
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5 votes
4 answers
234 views

What material could merfolk use to make rope?

I have a fantasy world with merfolk in it who have their own underwater civilization. While they are capable of trading and obtaining material from humans I want to figure out how much technology they ...
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3 votes
5 answers
214 views

What method of waste disposal would be the most practical for merfolk?

While worldbuilding my merfolk society I've been thinking about what method of waste disposal they would use. I've come up with a few ones that I will describe, and ask how practical they are, and if ...
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7 votes
7 answers
2k views

Could merfolk create pottery and other vessels for storage?

I've got a fantasy setting set in a world based on the ancient near east ca 500 B.C. In it there are merfolk who have contact and trade with local humans. The merfolk are physically more similar to ...
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6 votes
2 answers
453 views

What kind of house would merfolk build?

In my fantasy setting there is a species of merfolk who live in the ocean. They have hands with human level of dexterity and can live completely underwater. I would want to ask a question about what ...
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7 votes
3 answers
258 views

What Would Be The Advantages Or Disadvantages Of Merfolk Having Extra Fins?

I've always liked the idea of merfolk having extra fins(by this I mean fins like the dorsal and pectoral ones and not the main tail fins). After seeing this article about how fish use their many types ...
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0 votes
0 answers
29 views

Are humanoids capable of breathing in water and on land feasible? [duplicate]

Is it possible to genetically engineer a creature that can breath in air and water? If so, what changes would have to be made assuming the creature was originally a human?
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4 votes
5 answers
2k views

Could we evolve to become mermaids?

Anyway, I'm playing subnautica and it goes something like this. you're traveling in the aurora an interstellar special ship, but due to some event you become stranded on a planet filled with water and ...
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  • 49
11 votes
4 answers
1k views

Would nomadic mermaids be capable of domesticating fish that they herd?

In my world, most mermaids migrate and have two family groups: A warm-water group and a cold-water group. When the water is cold (winter) the mermaids move down south to warmer waters. There the ...
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  • 651
6 votes
7 answers
287 views

Could giant mermaids domesticate baleen whales?

While many mermaids are hunter gatherers some live a pastoral life, herding creatures like domesticated manatees. Along with this some mermaids (particularly giant mermaids) herd baleen whales using ...
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  • 6,033
6 votes
7 answers
469 views

What would be an effective land based mode of transportation for mermaids?

(this is probably going to be my last mermaid based question for while) unlike their giant counterparts, most mermaids are more humanoid sized and have a life style similar to seals. now some of these ...
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  • 6,033
3 votes
5 answers
293 views

How would giant mermaids wage raids/warfare against ships?

Part 2 of How could medieval ships protect themselves from giant mermaids? While hominids may rule the land, giant mermaids dominate the sea! Many nations employ these giant mermaids to wage warfare ...
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  • 6,033
28 votes
17 answers
6k views

How could medieval ships protect themselves from giant mermaids?

Long ago when apes and hominids split off a third group began to live in the seas and became mermaids/seafolk. Among several species of mermaids, there is a species of "giant mermaids" who ...
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  • 6,033
10 votes
3 answers
1k views

What would be the most comfortable position for mermaids and humans to engage in sexual relationships?

Alice the mermaid and Bob the human have been dating each other for quite some time, and being young adults filled with love and copious amounts of hormones the two of them want to take their ...
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  • 13.3k
6 votes
2 answers
275 views

When is the latest a population of merfolk could have inhabited Zealandia without humans getting conclusive proof of their existence?

Inspired by this answer to this question. In my setting, there exist magical immortal mutants descended from humans who randomly became "magically active" and transformed into the first ...
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  • 5,885
0 votes
1 answer
171 views

What adaptations would humans need to become partially aquatic (like otters, seals, etc.)?

Continuing from this discussion: Why might it be desirable to engineer aquatic humans? In a society in which humans have been bio-engineered for a partially marine lifestyle (I mentioned otters and ...
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  • 661
3 votes
2 answers
246 views

What pressures would lead to the evolution of merfolk?

I want to know what evolutionary pressures would lead to merfolk. Here are characteristics required: must be around human height, strength, and intelligence must swim at least 4 mph it having gills ...
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