hey /tg/
i like merfolk
lets post merfolk
also talk about merfolk
>>51274520
so ive been thinking about what type of clothes merfolk would wear, and how they would be made. i learned that the aztecs and mayas used natural rubber to make fabrics waterproof:
>The first use of rubber was by the indigenous cultures of Mesoamerica. The earliest archeological evidence of the use of natural latex from the Hevea tree comes the Olmec culture, in which rubber was first used for making balls for the Mesoamerican ballgame. Rubber was later used by the Maya and Aztec cultures - in addition to making balls Aztecs used rubber for other purposes such as making containers and to make textiles waterproof by impregnating them with the latex sap.[6][7]
>>51274552
they even could vulcanize it
>Although vulcanization is a nineteenth-century invention, the history of rubber cured by other means goes back to prehistoric times. The name "Olmec" means "rubber people" in the Aztec language. Ancient Mesoamericans, spanning from ancient Olmecs to Aztecs, extracted latex from Castilla elastica, a type of rubber tree in the area. The juice of a local vine, Ipomoea alba, was then mixed with this latex to create processed rubber as early as 1600 BC.[4] In the Western world, rubber remained a curiosity, although it was used to produce waterproofed products, such as Mackintosh rainwear.[5]
>>51274566
anyway, all you gotta do to vulcanize rubber is add sulfur to the liquid natural rubber. then it is completely immune to microbes and completely water proof.
easy to do
anyway
ima just post stuf fnow
anyone have pics of underwater cities?
heres a gif
>>51274725
ima organize my merfolk folder while i do this. its a mess
>>51274735
>>51274725
>>51274735
thnx anon, any specific merfolk you like? i have alot and can post them for you
nami a cute
>>51274766
the creepy one and the hot male one :3
>>51274812
>>51274824
>>51274812
>creepy
i have a abysal fodler and a evil folder. ill post some of those
>hot male
idk what the definition of hot is for men so ill do my best, i have a male merfolk fodler tho.
>>51274845
more evil
>>51274841
>>51274845
thanks anon, I appreciate that
>>51274859
creepy
>>51274868
>>51274871
more creepy
>>51274881
spooooooky mermaid
>>51274871
that's a nice one - saved
>>51274886
this one is neat. its like... half jelly fish i guess? idk
>>51274879
and two "special interest" ones
>>51274899
done
>>51274895
is this "hot"?
idk
>>51274552
Doesn't creating rubber from sap require heating it? Although at low temperatures? Come to think of it, maybe an underwater rubber production plant could be constructed around a hydrothermal vent.
I don't think I've ever seen merfolk wearing clothes made from plant fibers. Kelp technically aren't plants, but they have cell walls that are very similar to cellulose. Also, looking things up on Wikipedia, supposedly decomposing kelp releases a lot of sulfides, which would work with the vulcanizing plan above. So merfolk could have a variety of material to make clothes from.
I played a more-or-less mermaid once. She wore tons of jewelry, but she only actually wore a chest wrap when dealing with surfacefolk. She was also average in looks, combined with a creepy personality and a violent temper, because I was trying to avoid making her a waifu.
>>51274918
>>51274926
yah it needs to be heated for a while, but merfolk can do that part of the manufacturing on the surface like humans do.
living kelp is actually a half decent plan. they dont need to bee rooted to the ground to live im pretty sure, since they get food from the water. symbiotic relationship.
also shells and stuff obviously. there is also a type of silk that clams make that can be woven into water proof thread.
>>51274968
Is OC appropriate?
>>51274986
yah
the new zelda game supposedly is going to have lots of redesigned zoras
>>51274993
heres a close up of the new zora
>>51274993
>>51275005
>Muh fish stick
>>51275030
>>51275044
never seen that b4, thnx for posting anon
>>51275064
>>51275079
i like this one for some reason
>>51274968
Kelp get carbon dioxide and various nutrients from the water, but they get energy from sunlight just like plants. Also, depending on how insulating a merperson's skin is, their body might be warm enough to inhibit kelp's growth. Not that that matters, because I was thinking of processing kelp into fiber like people do with hemp and cotton. Kelp-derived cloth could even be bleached and then dyed. Clothes would have to be things that are tight and/or cinch close to the body though, to minimize drag.
Wasn't there a comic book where merfolk carved coral into synthetic exoskeletons and grafted those onto themselves?
Also, what steps would a person from the surface take to visit a mer-city for an extended duration? There's concerns about getting air or finding a way to breathe water, of course, but also human skin gets waterlogged, plus merfolk might be living comfortably in water that would give a human hypothermia, and floating towards the ceiling of any indoor location could be a potential embarrassment.
>>51275047
>That ear
>>51274918
oh god, no weeboo stuff for me
>>51274978
>>51275018
those are saved too, thanks
>>51275110
>legs and tail
disgusting
>>51275107
>Kelp get carbon dioxide and various nutrients from the water, but they get energy from sunlight just like plants. Also, depending on how insulating a merperson's skin is, their body might be warm enough to inhibit kelp's growth. Not that that matters, because I was thinking of processing kelp into fiber like people do with hemp and cotton. Kelp-derived cloth could even be bleached and then dyed. Clothes would have to be things that are tight and/or cinch close to the body though, to minimize drag.
if kelp products dont degrade super fast then that seems like a good idea. i was thinking that some merfolk use small shells and turn them into like... scale shirts/pants
>>51275107
>what steps would a person from the surface take to visit a mer-city for an extended duration? There's concerns about getting air or finding a way to breathe water, of course, but also human skin gets waterlogged, plus merfolk might be living comfortably in water that would give a human hypothermia
hmmm idk, there could be human hotels with air pocket rooms where they stay and sleep and rest. magic water breathing potions and items, i guess would also prevent water logging.
other than that, diving suits and snorkels?
>>51275248
>>51275271
>>51275193
Honestly, I'd give a bolt of kelp-derived cloth, worn underwater, a couple of months before it degrades, unless the merfolk find something with which to treat either the cloth or the strands that get woven into it. So maybe there's a massive kelp industry to support mer-modesty, or maybe kelp outfits are a sign of wealth.
Your scale outfits would need some kind of string or something to hold them together. Kelp would be one option for that string, but we're both unsure it would last very long.
Would it be possible to make leather underwater? Without forcing the merfolk making it to swim through a haze of filth and dangerous chemicals?
>>51275110
One of her sisters did that to her. Because she took pity on a human during a war.
>>51275291
https://en.wikipedia.org/wiki/Sea_silk
merfolk farm clams for silk, food, and pearls
>>51275346
maybe through hundreds of years of husbandry, the clams have changed to produce a lot of that silk, like how modern sheep produce a stupid amount of wool.
>>51275406
>>51275443
>>51275521
>>51274708
NO COUNTERFEITS
>>51274780
christ those tits
>>51278164
buoyancy.
>>51278193
>buoyancy.
>>51278399
>>51278412
>>51278454
>>51278470
>>51278488
>>51278500
Close enough
I like the ones based on weird deep sea fish. Mostly because I like weird deep sea fish, and the glow in the dark effect is cool.
>>51275144
holy shit! ist that real? or is it part of a movie?
>>51274520
DM ruined them for me, can no longer trust one or be near one at all.
>>51283865
what happened?
story time!?
>>51283865
Let's hear it anon.
>>51278412
God I fucking hate pinterest. This image is clearly from deviantart, but when I reverse-search it, all I get are pinterest results. I swear to god pinterest is the worst designed image-sharing website I have ever seen.
>>51284231
use site:deviantart.com to filter the shit out.
http://o0dzaka0o.deviantart.com/art/Skin-Nami-river-spirit-League-of-legends-456808266
>>51284231
Dude. Filename, it says "by o0dzaka0o" so you just google that and then plug "nami" into the search by their gallery.
>>51285373
although adding -site:pinterest.com to remove that pieceashit is a good idea for general searches too.
Am I right in thinking that the main constraint to life at depth is pressure, not temperature? Or do species have to make weird adaptations to deal with super-cold?
>>51287977
Temperature remains pretty constant 4°C over most of the water column, as that is the temperature water is densest at. That's pretty cool but not nearly as big of an issue as the pressure gets when you go deeper because pressure increases at a constant rate.
Turns out I have a small merfolk folder. Gonna post what little it has that hasn't already been posted.
Starting with my favorite.
>>51288458
>>51288527
>>51288537
>>51288550
>>51287379
>although adding -site:pinterest.com to remove that pieceashit is a good idea for general searches too.
Fuck Pintrest and thank you for that idea.
>>51288560
I love mermaids. And river spirits and sirens and selkies. Anything like that. Wish I had more pictures, but I will post what I have, some aren't exactly merfolk but associated with water anyway. I like to imagine my taste is impeccable.
>>51289548
>>51289563
>>51289575
>>51275346
>The (early 6th century CE) Shuyiji 遹異記 "Records of Strange Things" mentions silk woven by Jiaoren 蛟人 jiao-dragon people", which Edward H. Schafer identifies as sea silk.
>In the midst of the South Sea are the houses of the kău people who dwell in the water like fish, but have not given up weaving at the loom. Their eyes have the power to weep, but what they bring forth is pearls.
>This aquatic type of raw silk was called jiaoxiao 蛟綃, i.e. "mermaid silk" or jiaonujuan 蛟女絹, "mermaid women's silk".
China even thought it was made by Dragons or Mermaids.
>>51289589
>>51274552
Unless it was for protection, rich fuckers showing off or diplomats dealing with 'muh modesty' surface dwellers, would they wear clothing?
Unless there is care taken to shape and form, it'll create drag which would likely be problematic in the long run.
The more developed a mer society is, this becomes less of an issue but early days I certainly see the mer sky(sea)clad being the norm.
>>51289988
>Merfolk only wear clothes when interacting with surface dwellers.
I can dig it
>>51289988
>>51290013
It could also make sense for them to wrap themselves in damp cloth - even if they don't seriously need moisture like that, it'd still be comfortable.
Did
Someone
SaySharks?
>>51289988
insulation bro. water is cold. thus they need clothes. just like a wet suit or fur.
>>51290131
Unless they evolved solely in warm currents, rivers, coastal regions or shallow, sunny reefs they would be comfortable living in the cold waters.
>>51290131
>>51290374
Clothing that insulates when wet is a pretty advanced thing. You'd need some esotheric fantasy materials for it - regular furs and skins ain't gonna cut it.
>>51290374
Things like mermaids or centaurs aren't going to make evolutionary sense. You're just going to have to say a wizard made them and leave it at that.
Dragons too, unless you want to do the front-limb wings thing.
>>51290374
>Unless they evolved solely in warm
like humans did you mean?
>>51290406
>Clothing that insulates when wet is a pretty advanced thing.
no its not. it works on the same principle as normal clothing. preventing convection of the boundary layer at the skin. its not hard to achieve.
I have material with the p/u/rest form of merfolk. I hope people are okay with that.
>>51290508
In my setting, merfolk are covered with otter-like fur that has two layers. The inner layer is downy and provides thermal insulation and the outer layer is coarse and wide and provides water insulation. Their skin remains dry except for certain places around the head.
They aren't completely aquatic, though, and live on the shores of island chains.
>>51290616
otterfolk
neat
>>51290634
I call them nymphs because muh greek mythos
I ripped these from this thread, by the way: http://archive.loveisover.me/u/thread/2124914/
It has cute deer girl maids in it.
Frogs count, right?
>>51290508
Convection is prevented by air trapped in the fur of animals and clothing - but when clothing gets wet that air is displaced and it convects just dandy.
Waterproof clothing that is also elastic to cling to body to prevent water from flowing around it isn't realistically low tech level, ergo you'd need fantastical materials.
I'm dry.
>>51290763
you are thinking of conduction.
you are mixed up.
convection is the transfer of heat by mass flow of a fluid with temperature.
conduction is the transfer of heat through a material.
>>51290771
thnx anon. i saved a few of them.
>>51290808
No problem.
Here's another one I found stashed away in my scifi folder of all places. I really need to port my hydrus network over to my laptop
>>51290766
Is that meant to be Undyne and Alphys or have I just got Undertale playing on my brain?
>>51290841
looks like a tailed version of undine
>>51290798
As the discussion is about clothing worn in an aquatic medium, isn't convection the correct term?
>>51290865
no.
if the water is stationary, like inside a wetsuit, then convection does not occur.
>>51290834
creepy
Have a comic that is highly relevent to this topic.
http://dynasty-scans.com/series/indigo_mermaids
>>51290910
>Evolution
>Clearly shows an Angler Mermaid going through puberty
>You keep using that word.jpg>Why does my tablet refused to let me post pictures?
is this relevent?
>>51290654
Get that cat out of here!
>>51290965
>implying that isn't consequtive angler generations becoming more efficient at luring in sailors
>>51283734
Probably cgi.
Shark Week is now about basically making sharks out to be B-Movie monsters now, instead of actually discussing their ecology and conservation like in the 90s.
Merpirates are the shit
>>51291188
>>51291188
ugh, no.
Pirates and mermaids should be eternal enemies.
I am happy this thread exists.
im interested in the types of animals merfolk would domesticate and how they would use them. i think merfolk would domesticate whales and use them to help push and pull ships.
they could have dolphins they use like sheep dogs to herd fish into nets and corrals.
>>51291204
It's chill senpai they're actually privateers
>>51291435
some medium size whales and dolphins could be ridden and used as war mounts.
small ones are used like sheep dogs and pets.
>>51291435
What about having a herd of whales pull a moving city for a nomadic group of merfolk
>>51291435
>>51291463
It's best to look at animals that are trainable in real life.
Dolphins are very good, so are orcas, something like a sperm whale would probably not be very suitable though.
>>51291480
yeah, unfortunately alot of fish are probably too dumb to train? i was thinking whale sharks maybe? but they probably arent smart enough.
medium size baleen whales are probably a good beast of burden. like an ox
porpoises are dogs
orcas would be horses
>>51291480
>>51291557
You could always use the excuse of magic I mean hell d&d has about a dozen spells made just for charming animals
>>51291204
I disagree
>>51290753Dumb frogposter
>>51275301
>One of her sisters did that to her. Because she took pity on a human during a war.
Really?
>>51291592
>guy behind the wheel
>>51291610
That does raise the question of just what that wheel does
>>51291480
Spermwhales are very smart, but actually training one would be hard, because how the hell are you going to get one to obey you instead of just doing whatever the hell it wants. Merfolk allied with intelligent spermwhales would be awesome, though. I'm pretty sure they actually are smart to understand the concept of mutually beneficial relationship (they are social animals that hunt and protect their young together, so they know how co-operation works), you just need to figure a way to convey the idea to them and figure out a system that benefits you both.
>>51291582
yeah but i'd like their society to be as plausible as possible.
>>51291707
how do humans train elephants? maybe the same methods could be used for whales?
>>51291557
Mermen wouldn't need to plough the field though. Or carry a lot of stuff.
Do they need beasts of burden.
>>51291757
good point actually....
>>51291757
they are still at least usefull for pulling ships and for war and travel.
An important thing to note: how would buildings work? What kind of construction materials would be usable in the depths? It'd be hard to corral animals since you have to build a cube rather than a square.
>>51291681
Presumably it's connected to some mechanism that gives the giga-mermaid a signal to turn to left or right when the wheel is turned to corresponding direction.
>>51291753
>how do humans train elephants?
I think you have to get them when they're young and pretty much train one from birth. And it only works in Indian elephants. African ones can't be tamed.
Getting a baby whale wouldn't be easy though. They live in grops specifically to protect their young, so you'll have to get past several angry whales in the first place, and then stop them from following you to rescue the baby. And sperm whales in particular are aquatic self-propelled battering rams with a cranial-mounted sonic blaster. Not the number one animal underwater society would want to piss off.
>>51291934
It seems dolphins would be the best bet, then. For heavier loads you'd have to use multiples and a "sled".
>>51291204
The pirates could never forgive them for such a grievous insult.
>>51291792
>>51291975
>Dragging stuff through the water
You better make that sled damn aero(aqua?)-dynamic
>>51292036
A conical formation on the front could work?
>>51291435
Sharks are notoriously difficult to train however simplistic their instincts mean they can be directed and controlled to a certain degree.
However, thousands of years of domestication means there are many smaller shark varieties with docile, even playful, temperments that are kepts as pets.
Grey Nurse sharks and similar 'gentle' giants were also a result of this.
>>51292090
Made out of a large shell?
If you need mettalurgy to smelt that shape it'd probably only wealthy fishpeople that would be able to transport goods.
>>51292113
That's a good point. I didn't think of that.
The literal sea horses and sea goats that Poseidon made.
>>51292113
>>51292127
Wait. Actually. What about bone? Coral, perhaps?
>>51289575
I'M SAD
>>51291603
Blue Sub No.6
Said human helped save her once also, so her sisters and others were getting concerned she may be, or may become, a tratior.
>>51292127
I'm imagining small transportation devices working like big trading vessels with us.
You need to a lot of capital to transport cargo even just a few miles. Wealthy merchants loan money to sledders and take a percentage of the trade profits.
>>51291603
Her people are part of a larger fish mutant population that are at war with humanity. But she ends up getting friendly with a human who saves her life and she in turn helps him. Her sisters find out about this and attack her. Also the sharkman that her people all serve probably rapes her as punishment when her sisters haul her in for judgment.
>>51283995
>>51284023
My dm was a vorefag and went magical realm on us.
>>51292036
>>51292090
you know that ships are on the surface on the water right?
>>51291934
Orphaned calf was found and raised, it had calves of it's own and told them that Mermaids are friends, this is kept up over each generation.
A few centuries later, most pods in the world at the very least understand that mermaids are not a threat. The ones with regular contact even have a rudimentary language going between them and the whales will help out if politely asked.
The deal runs both ways though, which is why the Pequod was attacked and sunk by the Mer.
>>51292257
thats not a good story anon.
make a greentext story
>>51292257
Ah.
>>51292189
She's crying blood. That's so far beyond sad territory it's going goth.
>>51292289
Oh ok
>Be me
>Go to game run by a vorefag
>Have hopes up
>He goes magical realm on us
>We leave unhappy and consider quiting
>>51292257
>vorefag
Lucky son of a bitch. I'd kill for that magical realm
>>51292257
Elaborate
Please?
>>51292377
>>51292388
So, were you two in the thread making a dragonstomach dungeon or did you miss it?
>>51292431
Missed it. What a shame.
>>51292198
I know what I'm watching when I get home.
>>51275005
odd I also saw the Avian Zora frem windwaker in some previews, which is it!?
>>51292431
Yes,would love to revisit the idea at a later date in a more fitting thread
>>51292435
Was a good one
>>51292435
http://archive.4plebs.org/tg/thread/51209604/#51209604 gotchufam
>>51275193
oh Jollyjack, I can only remember you as the guy who made a comic about a bimbo killing everyone's brains to turn into a world that only existed for her own sexual gratification
>>51291875
Corals, possibily. You grow your house. And maybe get it from coral fields to the city, when it's grown to the size you want it.
>>51291934
We kinda trained killer whales nowdays. Maybe mermaids use them like sheperd dogs.
Tough this begs the question, rule of cool aside, would whales even be a good thing to domesticate? For what, milk and possibly fat?
Granted, I personally wouldn't resist anyway the temptation to drag the PCs in an underwater Venice made with corals in which fucking spermwhales encrusted in gems go about, but.
>>51292654
Both. The Ruto and the Zora both exist as divergent special lines.
For that matter, why the hell weren't the Zora in Wind Waker. Big Ocean? Good, they rock the Ocean!
>>51292784
because as friends of Link they'd break the tri-force fishing quest
So, Vampire Merfolk. Legend or Scourge of the Sunless Depths?
>>51292759
It wouldn't be that big of stretch to say that merfolk are more skilled with training aquatic creatures than humans
my take is for more fish like merfolk, and their half breed children are the deep ones who have leggs, Innsmouth is an atlantian colony
>>51292784
Maybe they exist, but live in the deep ocean; the places that were already under the sea before the flood.
>>51292759
>Tough this begs the question, rule of cool aside, would whales even be a good thing to domesticate? For what, milk and possibly fat?
Whale milk is incredibly nutritious. And they could possibly be used as beasts of burden to transport large loads. Or as beasts of war. Having trained war-spermwhales would serve as a very good equalizer against human navies untill you get to fairly modern armoured ships. Even a large wooden ship will not fare well if you have a hundred ton living battering ram smashing face-first into the bottom of the ship.
Most of the pictures I've got are of the creepy deep sea variety.
Does their vagina smell like human?
>>51295573
no it smells like vanilla
>>51295647
Good enough for me.
>>51291435
Cephalopods are pretty smart and understudied by surface folk.
Large numbers of octopi shooting clouds of ink upon command or overwhelming and grappling down enemies?
Maybe even giant squid or krakens could be domesticated by merfolk?
I want to cum inside a cute merfolk!
>>51299800
>>51299813
>>51299836
>>51299862
>>51299887
>>51299910
>>51275044
>look up the encylopedia entry for this one
Bueno
NSFW
https://chan.sankakucomplex.com/post/show/5290008
>>51292232
>Also the sharkman that her people all serve probably rapes her as punishment when her sisters haul her in for judgment.
wat.png
>>51290808
neat coins, how big are these?
>>51300801
Verg. He's a shark/man mutant that leads all the various aquatic mutants in blue sub 6. He's basically a very big, very angry teenager looking for the approval of his "father," the scientist who made all of fish mutants. Problem is that the scientist made all the fish mutants because he wanted to make a species that wouldn't be as bad as humanity, which by that point had massively fucked up the planet and was in decline. And the way Verg thought he'd earn his father's love was by destroying all of humanity, when really the thing that his father didn't like about humanity was of their stupidly destructive tendencies. So Verg is frustrated constantly by the fact that as the war goes on and he kills more humans his father gets cold and bitter. Then when Mutio gets hauled before him and accused of treason he decides to take out his frustration on her. Exactly what happens isn't really shown, but it's somewhat implied that he rapes her.
>>51302130
>waifu character gets raped
Sounds shitty desu.
>>51274708
What is actually going on here?
http://mermaidcomics.com/
I just want to be a merbro and explore 2-D dirt land in my exosuit-fishbowl.
>>51306716
To sum it up concisely, a semi-retarded evil villain from the shantae series was selling mermaids as monster chow. He'd run short on actual mermaids, so he was making counterfeit ones to shore up the numbers till he could actually get more real mermaids.
>mermaid thread
>no Rikuo
Fuck y'all.
>>51307093
HAHAHA, yes! In under the wire.
>>51307006
>selling mermaids as monster chow.
That's pretty fuckin dark.
>>51307415
That it is.
>>51306961
>the book of mermon
That's actually pretty funny.
>>51274552
Why would they wear clothes? Ocean water would take away or give heat far faster than any clothing would protect against it. Unless there's air gaps, blubber or really dense fur. Only decorative would work really, maybe a modesty thing, but probably one that didn't develop till contact with the surface world.
>>51275047
Muuuutio~.
>>51300801
Blue Submarine No. 6
Great anime.
>>51308319
>great
>heroine gets raped
If it looks like a cuck and sounds like a cuck...
>>51299410
Most octopuses are douches, though. Cuttlefish are olev.
>>51292113
you could literally make it with seaweed.
>>51275107
I think people have literally made some fabrics/bioplastics from kelp.
More art project and inspiration for what could be than a viable material to compete on the market but it's something of a proof-of-concept.
>>51308336
She's more of a side character than the main heroine. The female lead is human.
>>51274725
Nami main approves
So merfolk farm calms, kelp and domesticate dolphins and whales?
>>51308126
Pockets can be really useful. Something like a wetsuit could work although clothes shouldn't really be necessary for a sea creature adapted to its environment so it'd more be for travel to far off colder waters.
I know some nomadic desert peoples wear much of their wealth in jewellery because it's the best way to carry it around.
>>51311133
They could also farm/raise crabs and sea snails, sponges and anemones.
I imagine dolphins filling a similar role as dogs for humans with maybe a little goods-transport thrown in.
So a paladin of the human-supremacist sort falls in love with a mer-person. They have a kid, a little blue around the skin and gilly, but otherwise the normal two-legged kind. The father is soon discovered by his old pally co-workers who kill him for fraternising with a sub-human. The kid stays with his mother until she dies of illness, leaving him an orphan at a fairly young age.
He plans to infiltrate his late father's order of paladins in order to destroy it from within, but what method is there to hide his physical traits in the long-term?
>>51312916
with or without magic?
i guess it would be very hard due to the blue skin
also, why is it always blue and green skin? what other colors could merfolk be? orcas are black and white and i think thats because from above their black backs blend with the dephs, and from bellow their belly blends with the ice/sky or something,
so what other skin colors would be viable for merfolk/acuatic people?
>>51316370
> so what other skin colors would be viable for merfolk/acuatic people?
Literally anything. Fish come in a huge variety of colors. Yes, there are animals that use a dark on top, light on the bottom pattern for blending in in open water, but in shallower regions you have colorful coral and kelp, so even animals that are just trying for camouflage can be surprisingly colorful.
And then of course there are plenty of fish that dispense with camouflage entirely and have bright colors for displays, or to advertise the fact that they're poisonous, or to create patterns that make a predator think that their tail is actually their head.
A merfolk could be anything from dark blue on the back and light blue on the belly for blending in, to some dazzling array of neon colors with stripes and swatches meant to impress, warn, or confuse.
>>51283734
>>51291121
Fake documentary about extant megalodons.
They also played a fake one about Mermaids a while back.
>>51316370
Most fish only see in the Ultraviolet spectrum as Infrared is the first in the spectrum to be absorbed.
Because of this, blue is a very useful colour, adaption wise, to avoid being seen by fish.
Mammals have a deeper field of colors to see and like you said with Orcas, they prey on other aquatic mamals and birds generally, so their colouration is to help from being seen by creatures with generally better eyes.
Saying that though, camouflage isn't the only reason for colouration, male Betta fish are brigth colours to attract females and to out-colour their rivals. Should that fail, they'll resort to violence.
Many reef dwelling fish are thought to be bright colours to, again, attract mates rather then hide among the equally bright reef surrounding.
Also human colouration was, seemingly, not based on hiding or finding sex but more to do with dealing with the sun.
Mermaids could easily be any colours you feel like.
Personally I'm fond of bright, dazzling displays like they were ocean peacocks.
>>51319820
I like them with thematically appropriate colours. Memaids living in coral reefs have bright and gaudy colours like the fish that live there, the ones living in lakes and rivers have more subdued colour schemes (greys, greens and browns mostly, although many fish living in such environments still do have intricate patterns, just not as eye-searingly bright as reef fish), the ones in the open ocean are mostly silvery blue or grey, and the ones ones living in the deep sea primarily come in black, bright red, or brown, with some being fully transparent.
>>51290627
What are they supposed to be?
>>51318353
That one was actually about a fictional giant man eating great white.