The Na'vi are monogamous creatures who mate (Na'vi name: muntxa si meaning "mate with, marry") for life. The mechanics of their reproduction are similar to that of humans and other Terran mammals. However, their unique physiology creates an experience fundamentally different from that of humans.
Canon cites that "the Average Na'vi is 4-times as strong as the most fit human athlete...has 'Carbon-fiber bones'...can breath toxic atmosphere"... which seems pretty self-explanatory. A couple of points from the Films: 1).
In Cameron's script she's introduced with the descriptor "in human age she would be 18," but that raises as many questions as it answers. As with the math that leads to Jake being 28, Neytiri's birth in the Earth calendar year 2136 and the film's setting in 2154 add up to make her 18, but that's by Earth standards.
Lifespan. Although lifespan data is incomplete, it is estimated Na'vi live 30% longer than the average human. Once born, Na'vi children mature more rapidly than humans.
Lo'ak and Kiri are 14 years old in Avatar: The Way of Water, while Tuk is only eight. So, it sounds as if the fourth movie will open with Lo'ak, Tuk, and Kiri at the same ages they are in the third installment, and then they will age six years following the time jump.
While the Na'vi hunt animals for food, it's clear they understand the weight of the sacrifice the animal is making. After killing an animal that resembles a deer, Jake says a prayer he learned from Neytiri, calling the animal “brother” and thanking him for giving up his life to feed the tribe.
The Na'vi people on Pandora have an average height of 9 to 10 ft which is almost double the height of the humans. The Na'vi people taller than humans because of the low gravity of Pandora. Additionally, the Na'vi people have only four fingers while the Avatars have 5 fingers.
The Na'vi have special organs (similar to kidneys) called wichow that take advantage of this atmosphere to extract greater amounts of oxygen for their bloodstream. These organs use carbon dioxide and water in their bodies and convert them into methane and oxygen.
The reference implies that a Na'vi's queue may be considered an intimate area of the body. Removing the queue of Pandoran wildlife has been shown to have severe effects. Despite this, It is unknown what would canonically happen if a Na'vi queue was cut off, but it is still implied to be serious.
Her father is not a father, her father is another mother, Eywa, the Great Mother, the sentient life force of Pandora itself that exists in all things there, but is rarely understood. So essentially yes, Kiri was born from Eywa just like Anakin Skywalker was allegedly conceived by the Force itself and its midichlorians.
But it turns out the 'hair sex' scene was never part of the theatrical cut at all, it was actually in the Avatar extended version that was released in 2010. The extended version is also included on home video, DVD and Blu-ray.
Jake Sully, ex-Marine, is recruited into the RDA's Avatar program after his scientist twin-brother, Tommy, is killed. Since Jake and Tommy share identical DNA make-up, Jake is able to step into his deceased brother's role as an Avatar driver.
James Cameron recently spoke with Empire for their January 2023 issue and was asked why he decided to make the Na'vi blue in Avatar. It turns out that there's not any grand reasoning behind the choice, it was simply the only colour he felt wasn't taken by other cinematic characters.
Clothing. Little apparel is worn by the Na'vi. Cloth, most likely woven from native flora of the planet is the basic garment worn by all Na'vi. It is possible that very little clothing is worn by the Na'vi because it is simply what is needed for the Na'vi to work and live taking minimally from the environment.
In Avatar (2009), the majority of the Na'vi are left-handed. For this reason, Neytiri teaches Jake to shoot a bow with his left hand (draw the string with the left, hold the bow with the right) even though he is right-handed. He continues to shoot a bow this way throughout t…
While Jake and Neytiri's oldest and youngest biological children, Neteyam and Tuktirey "Tuk", have four fingers, seemingly taking after their mother, their middle child, Lo'ak, has inherited five fingers.
Lo'ak te Suli Tsyeyk'itan is the fourteen-year-old son of Jake Sully and Neytiri, the younger brother of Neteyam, the older brother of his only biological youngest sister, Tuktirey, and the younger adoptive brother of Kiri.
It was only when Lo'ak insisted that Neteyam agreed to the rescue. Neteyam risked his life and perished in order to save Lo'ak and Spider from Quaritch. As Jake himself said: "A son for a son". Spider wept for Neteyam as he died as well.
