Overview
Avg. height: 1.70-2.20m | Avg. weight: 80-150 kg | Hyper-carnivores | Semi-aquatic lifestyle | Lifespan: ~120 years
Hanasei are a semi-aquatic species that originate from lakes, but expanded their settlements into rivers and other large bodies of water. They're a medium-sized biped with a hard keratin helmet where horns sprout from and a tail with large fins. Their skin is slightly damp, and can range from smooth to bumpy, that affects their transpiration and how often they must hydrate. They have both two nostrils located at their helmet and from 2 to 4 gills on both sides of their neck, of which are used for speech in land and breathing underwater, while the nostril's only function is on land respiration. Their necks are strong and well develop, and can expand or contract.
Both hands and feet have webbed fingers to facilitate swimming, but the webbing on the hands can retract for better dexterity when handling utensils. Their amphibious lifestyle left them being only decent at both types of locomotion, but their versatility makes up for it as they can comfortably transition to both environments. They're hyper-carnivores and will eat anything made of animal matter, including bones.
They are the only sexless sophont in Koegama, using Aether as a reproduction tool instead of a biological system.
Physiology Notes
Head
The common head structure of a Hanasei is somewhat flat, with a stout snout and large jaws. Proportions and shape vary per individual, and slight deviations from standard models are common. Sometimes, small barbels, whisker-like structures, will grow from their jaw and upper lip area. They give a small boon to the olfactory systems, but otherwise have no major benefits.
Horns
While the protrusions on Hanasei's heads are not anatomically horns but a different keratin appendage, horns are the most common colloquial term. Their main purpose were for fighting and a display of health and fitness to potential partners. Nowadays, most Hanasei have no real use for their horns other than decorative, but individuals may favor different horn styles compared to others.
They don't shed, growing through their infancy and plateauing around 23 to 27 years old. If a horn is broken mid-development, it will continue to grow, resulting in mismatched horns and branched protrusions depending on the type of damage. Once the horns stop growing, the blood and nerve system will shrink and be absorbed, leaving the area with no sensation and regrowth impossible. Cracks and missing pieces being a common sign of age.
Variance
Horns are very vulnerable to Aether tampering, leading to a numerous amount of styles and types to exist. Larger, more elaborate horns can make swimming more difficult, but overall the range is stable and harmless.
The presence of horns and the pair number is not affected, with 2 horns always present.
Eyes & Ears
Hanasei have good night vision, but poor eyesight in general. They can recognize the shapes around them and a few colors, but their daylight and night vision are almost the same otherwise. Their eyes can have different shapes and colors, but the effect is purely visual as their eye sensors work the same regardless of their appearance.
Hanasei don't have visible ears, but a tympanic membrane around their cheek area, which is able to pick up vibrations both in and out of water. They have great hearing, and are more aware of vibrations such as tremors and footsteps. They can voluntarily close their inner ear and stop themselves from picking up sounds, a common method for falling asleep.
Mouth
Hanasei lack teeth, using their upper jaw protrusions to hold and rip food instead. They have a powerful bite, being able to hold down things with immense pressure. Their tongues function like a catapult, with the tip facing the inside of the mouth on a resting position and launched outwards when needed, their saliva being sticky and helping trap prey inside their mouths. With cooking and more efficient methods of getting food, this isn't a common practice anymore, unless one spotted a quick snack. Unlike the other sophonts, Hanasei are still able to eat raw meat and may supplement their normal diet with bugs, fish and other easy to snag creatures in between activities.
They have very powerful and sensitive taste buds, coupled with a taste disc that lets them distinct between minute differences in food. Their mouth, just like most of their organs, tend to take the most prominent color of their Aether.
Respiratory system & Speech
Hanasei has two different systems for breathing. Outside of water, their nostrils are open and air moves through their cavity into their respiratory organs, and their gills are used for channeling sound. Air can be directed to their larynx, which is specialized for manipulating air into sound similar to vocal cords, which is only connected to the gills and not nostrils. This separate system means Hanasei can talk while breathing, and their vocalizations are very impressive, being able to mimic almost any sound they hear with practice. They can alter these sounds with the opening and closing of the larynx openings and changing how open or closed their gills are. To keep their gills from drying, the parts used for respiration often retract or close, but Hanasei in drier climates must moisturize their gills at intervals to prevent internal damage.
Underwater, their nostrils close and their gills stay open. Most of their larynx close, and filter capillaries expand to better capture oxygen diffused in the water. This makes vocalization underwater impossible, and sign language is the most common replacement. Hanasei can have 2, 3 or 4 gills on each side of their neck, and the shape of the gill can be varied, creating "accents" for each Hanasei in their relaxed voice.
They have a good olfactory system, being one of their most reliable senses. They're able to smell the humidity in the air and incoming rains and droughts. Because this uses their nostrils, they're unable to smell anything underwater.
Body
Hanasei size and builds are diverse, with individuals building muscle mass, fat and other outside factors influencing how they look. Their proportions stay consistent, with necks around the same size of their torso, short arms and elongated legs bigger than the torso itself, but deviations aren't uncommon.
Limbs
Hanasei arms start with their shoulders placed at the lower area of their torso, and stop with hands on their hips. Despite the shorter length, they have impressive arm strength and weaker Hanasei are known to rival other species' average. This makes them great at carrying things, and grabbing and holding down prey and foes. Their hands are dexterous when the webbing is retracted, but they lose a lot of maneuverability when extended.
Their legs are long and muscular, granting them an upright walk. They're not very fast, averaging 7 km/h running speed, but they have great endurance and the ability to jump high vertical distances and can pounce forward if crouched. Their muscle system can lock into a crouching stance, a comfortable stance comparable to sitting. Their feet are digitigrade but their fingers are big and wide, with a large base, keeping their body in balance and stable at the cost of mobility and grace.
Tail
Hanasei tails are long, with a vertical caudal fin that often extends beyond the base and helps them swim. This fin can regenerate when damaged, and broken or rotten tissue can lead into an entire chunk or the fin removed to speed recovery and promote an even replacement.
Fins are classified into two types, regular and segmented. Regular fins are connected into one piece, while segmented fins are broken down into various fins of different sizes and shapes, similar to fish fins. No matter the type, their shapes are kept hydrodynamic and tailored for swimming. Sometimes, the size of the base tail will also be shorter or longer than average.
Hanasei swim in two ways: a horizontal wave movement and by kicking their legs. The former is done with the help of their tail fins and is the slower of the two, but costs less energy. Hanasei will often alter the surrounding current with Aether to make this movement faster, with an average of 11 km/h. Leg kicks are less common as long term swimming and rather used for short bursts of speed and distance, and the longer one uses it the more they'll tire and may be unable to swim without resting. The peak swimming speed of Hanasei is around 20 km/h, taking leg kicks into account. As they were ambush and endurance predators, the lack of speed was not an issue for them. Depending on their fin shape, individuals may have different ways of swimming.
Aether
Their natural Aether is Nam Aether. They make use of it to help their swimming and underwater hunting, and to keep themselves damp. They tend to cast Aether from their mouths, as their Aether glands are present on their throat.
In their breeding months, their Aether start producing cells for reproduction and lose their usual abilities. This months-long limitation leads Hanasei to not be involved with using their Aether proactively or learn new skills, preferring to rely on technology to harness and utilize Aether instead.
Reproduction
Egg
To create an egg, two or more Hanasei spit out and mix their Aether together in a body of water. The resulting foam will stick together and in 3 days will develop into an egg, and one healthy Hanasei can produce enough reproductive Aether to make 200 eggs. This can only happen in the breeding period of Hanasei, usually on the 2nd and 8th month of the year. Modern Hanasei societies will instead send their reproductive Aether to the labs of the area, which will store it to create eggs with more efficient mixing machines and incubators.
The Aether inside the egg will segregate itself into larva stem cells and the nutritious yolk. After 12~14 days, the egg will be completely dry and the larva will eclode. The volatility of Aether means many larva never form or form incorrectly, and these eggs are discarded and repurposed or eaten. Only 1 in 50 eggs actually eclode, and this high rate of failure leads Hanasei to not view eggs as their young or a new generation, but more of a vessel that can fail or succeed. They have no qualms with re-purposing eggs in food, experiments or any other procedure.
Larva
Larva, often called notes, are very different from their adult counterparts. They're not considered sapient when they first hatch, but their growth is rapid and by 3 months in, they'll have the intelligence of a one year old toddler and have legs and arm stubs growing, alongside the keratin helmet and an underdeveloped nostril. This growth is fueled by a great appetite, and Hanasei larvae are omnivores and will eat almost anything they can fit in their mouths.
At the 9th month, they'll have most of their limbs developed to their young proportions, but their respiratory system will need an additional 3 months to allow for respiration outside water. Larvae at this stage will take short dips into land to push their muscles and lungs, until they no longer need to return to water to breathe.
Young
Once a larva can leave the water, they're called a young. "Young" encompasses the children and teenager years, lumped together as they no longer share any major physical differences from each other or to adults. The rest of their growth will be in size and intellect, slowing down from the quick pace of their larval years into a more normal 20 or so years to reach maturity. The main exception are horns, which only start growing around their 5th year and can take over a decade to finish growing. Smaller horns may plateau faster.