Deep Sea Fluffy Guide


Deep sea fluffies are an aquatic subspecies of fluffy ponies, related to sea fluffies, their shallow water counterparts. They’re known for their unusual physiology and behavior, showing that they’re not just simply designed to love and play, but survive as well. According to Hasbio, the biotech division of Hasbro, which created fluffy ponies, deep sea fluffies are the result of “unplanned, wayward and erroneous mutations”, mainly because of a strange group of mad scientists from the deep web, Beyond Creations. As means to both stop the damage that sea fluffies were causing to the oceans and to experiment with fluffies to create “stronger” specimen. And as a result, the dangerous and fertile deep sea fluffies were created. Each deep sea fluffy was based off of a certain species of a deep sea fish, such as anglerfish, lamprey and viperfish. However, as said group of mad scientists was also experimenting on humans and animals, it quickly got disbanded and all members were arrested. From that point, the deep sea fluffies were released into the wild.


Deep sea fluffies are similar to their shallow water relatives, having gills and flippers, except they have better adaptation for survival. They have no lungs, swim bladders or any gas-filled spaces in their bodies, otherwise they’d be crushed by the extreme pressure of the deep sea. They come in various types, resembling various fish and other creatures from their habitat, a major example being anglerfish-type deep sea fluffies.

Due to the phenomenon known as deep-sea gigantism - which may be caused by colder temperature, food scarcity and reduced predation pressure - deep sea fluffies are much larger than other subspecies, being around the size of a large dog, such as a German Shepherd or a Tibetan Mastiff (excluding deep sea microfluffs: floaters, scavengers and sea-floor fluffies). Because the deep sea is also very dark, with little to no sunlight penetration, these creatures’ fluff often comes in dull colors. There are exceptions to that, of course, such as deepsea lizardfish-type foals, who are born with pink fluff, though their fur fades into grey as they mature. To survive with the deep sea’s harsh conditions, deep sea fluffies are physically strong, having good muscle strength and skeletal density. Due to food scarcity in great depths, they evolved powerful jaws with sharp teeth, having a deadly bite force of 2,500 pounds per square inch, similar to that of an American alligator. They also have extremely sensitive eyes adapted to the dark, giving them more reason to move upwards at night only.


Deep sea fluffies have multiple types based off of various deep sea fish. Some of the most unique
examples are the black swallower-type (with an extremely expandable stomach to the point they can look like a pregnant land fluffy mare and become immobile), the barreleye-type (who’s made of blubber, without any fluff, is transparent and has completely rotatable eyes inside the head), and the Mariana snailfish-type, (whose habitat is the Challenger Deep point, in other words, the very bottom of the Marianas Trench, being considered one of the deepest-living animals ever found).


Build: Due to deep-sea gigantism, deep-sea fluffies are as big as a German Shepherd or a Shetland pony. Components of a deep-sea fluffy include:

  1. Internal Organs - For sustaining life. Deep-sea fluffies have very unique organisms, adapted to such extreme environments they live in.

  2. Skeleton - The muscle and skeleton density varies with each specimen, but all of them have skeletons made of cartilage because they live at depths with bone-crushing pressure. Mariana Snailfish deep sea fluffies have holes in their skulls to balance the inner and outer pressures.

  3. Fins of all shapes and sizes - Even when a deep sea fluffy’s fins can be of any shape or size, they’re not its strongest trait. Deeper-dwelling sea fluffies (that live at the abyssopelagic zone or below; 4000m+ of depth) are slow swimmers to conserve energy.

  4. Extremely large eyes - Not designed for cuteness and can make the deep-sea fluffy look rather unappealing. Many deep-sea fluffies are blind (do not respond to any kinds of light) and those eyes work more as sensory systems which detect vibrations, pressure and movement. The only specimen who see are colorblind, with their vision being very blurry and desaturated. They are either protanopic (blindness to red) or tritanopic (blindness to blue).

OLD (OUTDATED) information: All deep-sea fluffies have excellent eyesight and night vision (7.5x of human vision), but they cannot see any other colors than blue (severely colorblind).

  1. Gills - For breathing.

  2. Mouth/nose/snout - With teeth and tongue; enables eating and communication. Nose and snout for smelling.

  3. Ears - Akin to a horse, but large for the scale to hear things better (instead of appearing cute).

  4. Fluff - Heat-retaining, hypoallergenic fluff with an undercoat. Made especially to absorb photons and blend with darkness. Almost all deep-sea fluffies have dull colors.

  5. Mane - Normally, but not always a different color than their fluff, made of long hair.

  6. Tail - For swimming.

  7. Genitalia and Anus - All deep-sea fluffy types are sexually dymorphic, even when some of them are hermaphrodites (such as the deepsea lizardfish type). Their genitals are both for urinating and reproduction, while the anus is for defecating.

  8. Bioluminescence - Some deep-sea fluffies use bioluminescence to cope with the darkness of the deep sea. The most famous example is the anglerfish type. Their bioluminescence can also be used to lure prey.

  9. Transparent cheeks - Fluffies have blushing cheeks to appear cute. However, because many deep-sea creatures have transparent traits, deep-sea fluffies have transparent cheeks.

  10. Other features - Antennae, spines, holes in skull, elongated “tripod” fins, etc.

Retaining heat - Blubber VS. Fluff - BOTH EXIST

Just like how Hasbio was experimenting with both mobile and immobile pregnant fluffy mares before they were raided by ALF and PETA, Beyond Creations was experimenting with both blubber and fluff when it came to heat retaining before it got disbanded. Blubber in a deep-sea fluffy can be a bit more efficient in catching heat than fluff, but the genes to have it are recessive. As blubber isn’t really a defect, a fluffy deep-sea mare won’t reject a hairless, blubbery foal.


Deep sea fluffies are predatory, obligatory carnivores and opportunistic scavengers, eating any animal that’s smaller than them. They tend to eat fish, eels, crustaceans, shallow sea fluffies and mollusks. While land fluffies love pasta and shallow sea fluffies adore seaweed, deep sea fluffies have a penchant for shark meat. However, they hunt smaller sharks and other similar animals, as they’re prey to bigger ones. Any meat from cartilaginous fish will do. To hunt and find food, they often go to shallower waters at night. Deep sea fluffies, while predators, are also prey, usually to animals who are bigger than them, such as octopi, Japanese spider crabs, sharks, orcas, giant squids and sperm whales (though their main predators are the last two). Surprisingly, at times, deep sea fluffies will try - and sometimes be successful at it - to hunt bigger animals. Meanwhile, they also like to eat animal carcasses (or what’s left of them).


Deep sea fluffies present rather unique behavior amidst the other breeds, races and subspecies. As a product of the environment they live in, they’re more intelligent and have a rather mature vision of the world, thus being the only fluffies who are aware the world isn’t all “love and huggies”, even when they sometimes wish for it and still have childish minds. They also don’t trust humans very easily, often seeing them as either prey or predators. Either way, feeling threatened or not, they become aggressive and attack. According to CNET, deep sea fluffy attacks result in over 3,000 deaths per year.

It is hard for a human to gain a deep sea fluffy’s trust, and rare for them to call people anything other than “hoomins”. The other terms also have slightly different meanings:

“Nice mistah/wady” - A rescuer, whether from a sanctuary or not, who has helped them before.
“Nyu mummah/daddeh” - A caregiver from a sanctuary who spends a lot of time with them.
“Munstah mummah/daddeh” - Someone who tried to keep them as a pet or in an aquarium with no means to help them or to release them back in the wild.

Because of their larger size and different behavior, Hasbio declared it is impossible to keep deep sea fluffies as pets. They’ll become aggressive and depressed while being kept in tanks or pools (if not in a sanctuary), reaching the “wan die” loop. The only way to heal them psychologically is to release them at either a sanctuary or back in the wild.

As a result of living in such a dangerous environment, deep sea fluffies are desensitized to the dark side of nature and they’re not scared as easily as their other relatives. And as they’re usually solitary hunters because, even when life is abundant in the deep sea, it’s very sparse compared to shallower waters, smarty syndrome is less common in them (with some exceptions. Anglerfish-type stallions are almost always smarties).

As they don’t have much contact with humans but do have some contact with their culture, deep sea fluffies tend to name their young themselves. The names are usually something related to water. Some common examples are Athena, Poseidon, Neptune, Moana, Aqua, Kai and Mariana.


Deep sea fluffies are always male or female. However, even when that’s the case, some of them, like the deepsea lizardfish-type, are hermaphrodites, even when the rest of the body is “male” or “female”. Anglerfish-types have a really unique way to reproduce, like the fish they’re based in: Males are almost always lustful smarties, despite being much smaller than their mates. As they attempt to reproduce with a female, they bite and hump the mare’s skin. A while later, they “melt” and disintegrate, fusing with the mare’s body, becoming nothing more than sperm storage. Female anglerfish-types can have up to six mates or more.

It’s rare for deep sea fluffies to mate more than once in their lives. Being oviparous, mares, along with their mates, will find a safe place to lay eggs, either around corals or caves. The average number of eggs they lay is around five to seven. The mare will guard the eggs, while the stallion will look for food to feed his mate. The embryonic development of the eggs’ fetuses often last three weeks to one month.

Newborn deep sea fluffies (“chiwpy babbehs”), like other fluffies, are born with their eyes closed and communicate by chirping instead of talking. However, the chirping is similar to that of a baby crocodile or a baby alligator, rather than that of a hamster or a bird. Even when they’re fragile, they can slightly swim, and as deep sea fluffies aren’t mammals, they already have the instinct to kill and eat. Instead of drinking milk, they eat small fish, crustaceans and zooplankton, because they are born with a set of small, sharp teeth. At this stage of life, the stallion leaves the mare, while the latter cares for her babies. Only around 50% of deep sea fluffy foals make it to adulthood.

Five weeks after birth, and the foals are on their second stage of life. They’re very energetic, know how to swim much better than before, and are beginning to speak. That’s the life stage where their mothers teach their young how to survive in the deep sea. Becoming instinctually prepared, the babies are then abandoned to survive on their own, getting their independence. Some may fall as food to predators, while some may be lucky and have the opportunity to live a long life. Deep sea fluffy foals then spend their childhood and adolescence moving their way up in the food chain.

A year after birth, and the deep sea fluffies are fully grown and sexually mature. The average life expectancy for a specimen is around fifteen years, though the former oldest deep sea fluffy known, Bluey/Bluie, a female viperfish-type, is currently 21 years old. However, it was discovered that the orange roughy type can live up to 70 years.


Like other fluffies, deep sea fluffies speak with a childish lisp, causing them to pronounce letters such as R and L as W instead. They also have a similar vocabulary, though there are differences.

Awmost mummah/Soon mummah - A mare who has laid eggs and is waiting for them to hatch.

Anehmaws - Animals. Used to address marine creatures.

Babbeh - Foal.

Bad Babbeh - Usually a deformed, crippled or mentally impaired foal who may die prematurely or grow vulnerable, but this term can also apply to badly-behaved orclingy ones.

Bad Huggies/Bad Speciaw Huggies – Rape/Non-consensual sex.

Bad Upsies - Any forced and quick ascension from the deep sea (such as being fished), resulting in tissue damage and barotrauma.

Bestest Babbeh - A foal who seems to be more instinctually prepared from other ones in a family (such as they knowing how to hunt and fight before their siblings).

Big Cwackies - A foal hatching from an egg.

Big Tentacwe Munstah - Giant/Colossal squids and octopi.

Big Whawesie - Whale. Often used to address the sperm whale.

Big Owwies/Huwties/Ouchies, Wowstest Owwies/Huwties/Ouchies, Biggest
Owwies/Huwties/Ouchies - Severe injury.

Bad Wight/Wite/Bwight/Bwite - Anything that’s too bright for a deep sea fluffy, as they have sensitive eyes adapted to the dark.

Bitsies - Biting/To bite.

Boo Boo Juice – Blood.

Bwite Time - Day time.

Bwudda - Brother.

Catch an’ Num - Hunt.

Cawty Meaty/Meatie - Meat from cartilaginous fish (sharks, rays, chimaeras, sawfish, etc), a deep sea fluffy’s favorite food (they prefer shark meat, though).

Chiwpy Babbeh - A newborn foal that chirps like a baby crocodile or alligator.

Cowaws - Corals.

Cowd Wawa/Cowdie Wawa - Cold water, either from great depths or around the Earth’s poles.

Cwabby - Any crustacean.

Daddeh - Daddy. Almost always refers to the sire. In very rare cases, it can also refer to a male human caregiver/rescuer (in a sanctuary or not).

Dawk Time - Night time.

Dawk Time Sky Baww - The moon.

Dawkies - Darkness.

Deepsies - The deep sea.

Deepsie Wawa - Deep water.

Deepsie Wawa Fwuffy - The way deep sea fluffies address their own kind.

Dummeh - Dumb/weak.

Dummeh Babbeh - Another term for Bad Babbeh.

Dummeh Hoomin - A person being addressed by a deep sea fluffy whenever it feels threatened or wants to eat.

Eggie - Egg.

Eggie Babbehs - Fetal foals, still developing in eggs.

“Enf!” – The grunting sound a stallion makes repeatedly when he is having sex.

Famiwy - Family.
Feew-Pwaces - Eyes.

Finsies - Fins.

Fishies - Fish.

Fowebah Sweepies - Death.

Fwend - Friend or ally.

Fwuffy - Can be any fluffy pony, but not itself.

Good Babbeh - Healthy, well-behaved and self-sufficient foal.

Good Feews - Sexual pleasure.

Gwassies - Algae/Seaweed.

Gwass Sowwy Boxie - A tank. No matter how big a tank can be, a deep sea fluffy will always show signs of psychological distress.

Heawt Huwties - Sadness or emotional pain.

Hewp - Help.

Hoomin - Human.

Hot - Whenever a deep sea fluffy feels hot. Used mostly for complaining about how warm the shallow sea is while hunting.

Huggies - Hugs.

Huwties - Hurt, any kind of pain.

Mawe - Mare.

Mawy Twenchie - Marianas Trench.

Meanie - Mainly for addressing people who capture them for anything that isn’t rescuing. Rarely used.

Mistah - Mister. A polite way for deep sea fluffies to address male caregivers in a sanctuary or rescuers. Also rarely used.

Mummah - Mommy. In very rare cases, it can also refer to a female human caregiver/rescuer (in a sanctuary or not).

Munstah - Monster, any big and dangerous creature.

Bwack Whawesie Munstah - Orca.

Cwabby Munstah/Cwunchy Munstah - A big crustacean, such as a giant isopod or a Japanese spider crab.

Fwat Munstah - Ray.

Guwpy Munstah - Eel. Can also be used to address black swallowers or any creatures with an expandable stomach.

Jewwy Munstah/Bouncy Munstah/Sea Jewwy Munstah - Jellyfish or siphonophore.

Shawkie Munstah - A big shark.

Smiwey Munstah - Jellenheimer.

Stingy/Shockie Munstah - Stingray, jellyfish or siphonophores.

Tentacwe Munstah - A big squid/octopus.

Wowmie Munstah - Tube worm.

Whawesie Munstah - A big whale.

Munstah Daddeh/Munstah Mummah - Someone who tries to keep a deep sea fluffy as a pet/for entertainment.

No-nos/Speshuw Pwace - Genitals.

Nu - No.

Num/Nummies - Food.

Nyu - New.

Octi - Octopus.

Otay - Okay.

Owwies/Ouchies - Any injury or pain.

Pee-Pees - Urine, sometimes also penis.

Poopie Pwace - Anus.

Poopies - Feces.

Pwetty Wight/Wite/Bwight/Bwite - Bioluminescence.

Saddies - Sadness.

Safe Pwace - Used by mothers to address the place they laid eggs in. It can also be used to address a sanctuary.

Sea Cookehs - Sand dollars.

Sea Gwassies - Algae/Seaweed.

Sea Jewwy - Jellyfish. It can also refer to siphonophores.

Sea Stawsies - Starfish.

(OUTDATED) See-Thingies/See-Pwaces/Peepews/Eyesies - Eyes.

Shawkie - Shark.

Shawwow Wawa - Shallow water.

Shawwow Wawa Fwuffy - A shallow sea fluffy. Can also be used to address freshwater aquatic fluffies.

Shawp Owwies/Ouchies/Huwties - Pain from sharp objects.

Sissy/Sissie/Sistah - Sister.

Siwwy - Silly.

Sky Baww - Sun.

Sky Fwuffies/Puffies - Clouds.

Sky Wawa - Rain.

Smawty - Rarely used, and for deep sea fluffies, it’s more like a term towards an arrogant, egocentric fluffy, rather than an alpha male/female.

Sowwy Box - A tank or pool.

Sowwy Bitsies - Biting the target as a form of punishment, revenge or intimidation.

Speshuw Fwend - Mate.

Speshuw Huggies - Sex.

Spongey/Spongie - Sponge.

Sweep/Sweepies - Sleep.

Teef/Teefies - Teeth.

Twenchies - Trench.

Upsies - Vertical migration (the habit of deep sea fluffies going to shallower waters at night to hunt).

Wady - Lady. A polite way for deep sea fluffies to address female caregivers in a sanctuary or rescuers. Rarely used.

Wastest Babbeh - Last surviving foal of a litter.

Wawa - Water.

Wawmsies - A deep sea fluffy feeling warm, though they feel like that at a temperature near 0°C/32°F.

Wittwe/Widdwe/Widdow - Little.

Wub/Wuv - Love.

Yus/Yes - Yes.


Deep sea fluffies can be found all over the world’s oceans (except the Arctic and Antarctic ones, only some types live there) at the aphotic zone. The oceanic layer where they live the most is the bathypelagic (midnight) zone, though some of them can be found at the abyssopelagic zone, and there are even species that live in trenches (The Mariana Snailfish-type is the deepest-living sea fluffy known, living at the very Challenger Deep point). The vast majority of deep sea fluffies prefer waters in which the temperature is between 4 and 2°C (39,2 and 35,6°F), though their usual comfort temperature is between 4 and 3ºC.

I’ve added a deep-sea-fluffies tag for your creations.

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Thank you!

Deep Sea Fluffies are terrifying indeed-

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