There were also Sarlaac on Felucia so I wonder where they actually originated. Felucia makes more sense for parasites and spores
You are absolutely correct that Sarlaac also reside on Felucia, Gilbert...
*Minor Digression Below*Felucia was a colorful, humid jungle planet located in the Felucia system of the Outer Rim. Being a key planet for control of the Perlemian Trade Route, it was the location of several battles between the Galactic Republic and Confederacy of Independent Systems during the Clone Wars, and later at least one Imperial outpost.[6] After the execution of Order 66, Jedi Knight Aayla Secura was executed by Commander Bly and the 327th Star Corps on Felucia.
Astrographical informationRegion(s): Outer Rim Territories[1]
System: Felucia system
Moons: 8
Trade routes: Perlemian Trade Route
Physical informationClass: Terrestrial
Atmosphere: Breathable to Humans
Climate: Hot and humid
Primary terrain: Jungles
Fauna: Gelagrub
Societal informationNative species: Felucian
Immigrated species: Jungle rancor/Tee-muss
Demonym: Felucian
Affiliation: Confederacy of Independent Systems[4]
The Sarlacc was a semi-sentient, plant-like, omnivorous creature found on several planets across the galaxy. Not much was known about this creature, but it was unique in terms of galactic species. It lived to be tens of thousands of years old, and reproduced by spores. One particular specimen of Sarlacc was located in the Great Pit of Carkoon on Tatooine.
It tortured the famous bounty hunter Boba Fett, who eventually managed to escape. While Jabba the Hutt has claimed it as a pet, it arrived on Tatooine of its own accord. A Sarlacc could be found on Felucia, and was the location where Shaak Ti was slain by Darth Vader's secret apprentice, Galen Marek. Another Sarlacc was known to dwell in the pit on the planet Aargonar's moon Aargonar 3. Besides the famous one, yet another Sarlacc dwelled on Tatooine right next to some Ancient Ruins. It attempted to devour Darth Tyranus while he was dueling Anakin Skywalker, but the Count used an exertion of the Force to escape and then fled from battle.
LifespanThe lifespan of a Sarlacc had been estimated to measure 20,000 to 50,000 years. Younger members of the species could move under the sands rapidly and catch their prey much faster, while older ones remained immobile, waiting for prey to stumble into their clutches. Females generally grew much larger than males, to the point that breeding required that the male attach itself to the female, being entirely dependent on their much larger companion. Adults generally had little to fear, as only the greater Krayt dragon of Tatooine, and the Gouka dragon of Aargonar were known to prey upon them.
Great Pit of Carkoon
The Great Pit during the Cold War.
One of the known specimens of the species resided in the Great Pit of Carkoon, beneath the sands of the Dune Sea on the remote planet of Tatooine. Most Sarlacci preferred damp environments, but they could live nearly anywhere including the desert sands of Tatooine.
The largest known Sarlacc in galactic history resided on the planet Felucia within the Ancient Abyss. The Jedi Master Shaak Ti was able to tame this beast and it assisted her in her duel with Starkiller. However, she lost the duel and was swallowed by the beast. It possessed massive tendrils and teeth that spread out over an area of the Abyss that was kilometers across. This Sarlacc was capable even of using its tentacles to drag great beasts like rancors into its maw or to crush attackers. In 2 BBY, it was restrained by the Galactic Empire in order to hunt down the remaining Felucians, although it was later freed by a redeemed Starkiller.
Xenobiologists were unsure as to whether the Sarlacc was animal or plant, as it possessed the characteristics of both kingdoms, but most scientists preferred the theory that the Sarlacc was a giant plant organism. Data taken from Boba Fett's helmet suggested that it was more like a plant.
BiologyThe Sarlacc was a large, omnivorous arthropod with long tentacles that rimmed its mouth. They reproduced by spores, known as "Sarlacci," that traveled through space until they found another suitable planet to inhabit. After implanting itself into the ground, the Sarlacci grew downward like a plant, forming a pit. The mouth and tentacles were the most visible parts of the Sarlacc. The rest of the Sarlacc's massive anatomical features were buried up to one hundred meters deep in the ground. This guaranteed protection of the Sarlacc's vital organs made it invulnerable to most forms of serious damage. The teeth of the Sarlacc surrounded its beak-like tongue and plant-like tentacles in tiers. Its teeth were also slightly slanted inward ensuring its prey would remain trapped. While its lightning-fast tentacles are used to snatch up its prey, they were not its primary means of capturing a meal. The Sarlacc discharged odors and scents that lured herbivores and scavengers close enough for it to use its tentacles.[6] Sarlaccs had a very odd body shape. The Sarlacc's mouth was the only part of the body visible, usually. Most of its body was covered in rigid plates. It had eight appendages beneath the ground used for stability or for reburial if the Sarlacc became partially exposed. The body of the Sarlacc ended in three roots used for moisture absorption.
Despite their size, the Sarlacc did not need to eat very much at a time. They were almost entirely immobile, which means they had to be able to survive for prolonged periods without food. As a result, they also digested their food very slowly. It was even said that Sarlaccs could be telepathic and could gain consciousness from the creatures they ate by assimilating their thoughts and memories during digestion.
Anatomy
The underside of a sarlacc's body.
"Tentacular appendages can whip out and snare spectators from the rim of the pit, and inward-pointing spearlike teeth make escape impossible." ―Mammon Hoole
The Sarlacc's body did not have a skeletal structure or a solid framework, but it did possess a strong muscular body with large roots and a series of nerve endings on its skin.
The Sarlacc also had roots on the outside of its body to leech the nutrients from the ground and to sense the vibrations from creatures on the desert sands. The Sarlacc lacked eyes and ears, instead relying on the sensors in its roots to "see" its prey. The Sarlacc's mouth contained large mucus-coated teeth and strong tentacles for catching prey. The tentacles grabbed prey and pulled them into its maw, whereas the inward-pointed teeth functioned to keep victims in the mouth.
The Sarlacc also had a large beak that emerged from the throat. The "beak", in reality, was the Sarlacc's tongue, and the tongue within the tongue was actually yet another stubby tentacle that aided in swallowing prey. The Sarlacc's throat had many veins and vessels which acted as sensors to determine the size, weight, and strength of the victim, allowing the Sarlacc to decide which stomach to put its prey into; stronger prey were put into the secondary stomachs, while smaller prey went into the main stomach.
The Sarlacc's tongue, blindly flexing for its next meal.
The Sarlacc's throat also possessed many microscopic openings that dispersed mucus to keep the throat healthy—the sand, gravel, or whatever the case was (as environment varies from one Sarlacc to the other) that dropped into the mouth could damage the lining of the throat. The more the Sarlacc ate, the more the stomachs ran out of room, and, in rare cases, it used a small number of its victims to grow the stomachs by enmeshing those few victims into the stomachs. The Sarlacc also used small air holes around its mouth for breathing.
The Sarlacc's roots functioned as tentacles during adolescence, and then grew into full immovable stalks during adulthood. They absorbed tiny fungal life forms, bugs, and microscopic cells and bacteria into the body from the ground for nutrients. The Sarlacc's body could also absorb liquid molecules through small openings in the roots, to keep its water level up.
The tentacles on the mouth were actually thin strong tongues that could feel and taste the ground and prey. The beaks of other Sarlaccs had other tongues within their beak that emerged to grab prey and directly pull them into its beak. The tentacles were known to stretch as far as four meters to grab prey.
Although Sarlaccs were usually immense in size, some miniaturized versions of the species existed and were traded as pets, such as in the case of Phileas.
Sarlacc vocalizations were comparable to high-pitched screeches. However, they do occasionally emit a loud belching sound when consuming prey.
Digestive system
Mouth
The Sarlacc's gaping, teeth-lined maw, as seen from the surface.
"The Sarlacc found me somewhat indigestible." ―Boba Fett
Only the Sarlacc's gaping maw could be seen from the surface, with the vast majority of its huge body lying beneath the ground. It lay in wait for any living creature to stumble into its maw, and additionally, it pulled nearby victims in with one of its many tentacles. A Sarlacc's mouth was surrounded by rows of retractable razor-sharp teeth, used to chew victims during adolescence, before the digestive system was fully formed. Adult Sarlaccs developed a beaked, snake-like tongue at the center of the fearsome pit, which doubled as a mouth.
After being swallowed by the tongue, the victim made its way into the Sarlacc's stomach to be digested, purportedly being kept alive and slowly digested for a millennium. A strong network of vessels inside the stomach punctured the victim's skin and muscles and then embedded itself into victims before injecting neurotoxins into them, preventing the victims from escaping and ensuring that they remained immersed in the acidic fluids in the stomach, and attached to the walls of the stomach.
The vessels also provided victims with nutrients to keep them alive while they were digested in agony; sometimes when a victim was in the stomach for a long time period, the Sarlacc actually embedded it in the lining of the stomach to make room for other victims it swallowed and to make the stomach stronger so that other victims could not escape participially once their digestion was complete and were free to become One with the Force.
Sarlacc NEGAS
Jawa victims.
A number of smaller, secondary stomachs were used to store victims for later consumption at times when the Sarlacc needed larger amounts of nutrients, such as when it needed to grow, breed, or strengthen its tentacles and beak for catching stronger, larger prey. The secondary stomachs also functioned as a space to store victims when the main stomach ran out of room, although this was rare as the Sarlaccs were an exceptionally feared creature in the Galaxy. The acidic fluids in the stomachs were composed of weak chemicals that took much longer to digest prey than acids in the stomach of other creatures. They specifically targeted skin and muscle tissue, because that was where the nutrients in the victims were. The secondary stomachs were also lined with more vessels and were smaller and more cramped to enclose the victims in, so that the Sarlacc did not have to deal with the victim trying to escape its hold. The pain endured by its victims in this process was reputed to be unimaginable, with only rare individuals such as Boba Fett being able to resist.
In addition to the acidic fluids that digested the outer portions of the victims, the Sarlacc also processed its victims from within. The Sarlacc's blood was highly caustic, and was employed in the digestion of prey. The tendrils and vessels pumped the Sarlacc's acidic blood into its victims to digest the inside of their bodies, and to carry back nutrients from the victims. This process also provided the victims with minimal sustenance.
Mating and spawning
Sarlacc larva
A Sarlacc nearing the end of its larval stage.
"It was far more plant than animal."―Unidentified Jedi Knight
A Sand People legend told of how the Sarlacc gave birth to itself in Tatooine's planetary core in the days before the twin suns split apart from a single star. According to this legend, it would continue to eat everything it came in contact with until eventually it was forced to consume itself. Though this was obviously not a true account of the Sarlacc's origin, the Tuskens themselves refused to accept any other explanation.
When a male Sarlacc, who starts off much smaller than a female made contact with a female, the male attached himself to her in a parasitic fashion. He gradually became larger as she became smaller. After several thousand years the female is digested into oblivion and he becomes the equivalent size of her, replacing the area where she once existed. The male then injected sperm into the spore production sac. Afterwards, the melded couple released the fertilized spores, which could leave the atmosphere and travel long distances through the Galaxy to other planets. Because of this fantastic ability to propagate, the species' point of origin was never accurately determined. Once the spore settled down, it attached itself to an organism and sucked blood from it to feed itself. After detaching, it developed into a more mobile larva and was able to hunt and consume prey.
As it grew, the voracious larva would eventually challenge larger creatures. If the Sarlacc larva was consumed by a bigger creature, the larva would kill it and eat it from the inside, assuming its consumer had swallowed it in more or less one piece. During this stage, it developed into a large worm-like creature with many tentacles and a beak-like maw. Eventually, the larva would dig itself into a pit, growing roots to anchor itself in the ground while it grew into a full sized Sarlacc, becoming largely immobile and more plant-like. The roots also functioned to absorb additional nutrients from the ground as a precaution against shortages of prey. A larger mouth formed around the beak, which became more like a tongue.
Semi-sentience "Sarlacci do interesting things with messenger RNA: over the course of millennia, they can attain a sort of group consciousness, built out of the remains of people they've digested."―Unidentified Jedi Knight
Boba Fett escaping the Sarlacc's grasp.
Jabba Desilijic Tiure sentenced Luke Skywalker and his companions to "death by Sarlacc" in 4 ABY. Prior to his execution, Luke Skywalker was able to retrieve his lightsaber from the astromech droid R2-D2 and free his companions. In addition to numerous other casualties during the ensuing battle, Han Solo obliviously knocked the notorious bounty hunter, Boba Fett, into the pit with a force pike. However, Fett remained alive and—using his jet-pack and weapons—blasted himself out some time later, becoming one of the only beings ever known to escape from a Sarlacc's belly alive.
While studying a holographic recording recovered from Fett's helmet camera, Senior Anthropologist Mammon Hoole discovered an unsettling revelation: the beast apparently possessed the ability to telepathically torture its prey. In this recording, Fett appeared to be reacting to stimuli that did not exist, suggesting that Sarlacc were capable not only of communication, but apparently of malevolence, feeding off of the fears of their prisoners. This led Hoole to classify the Sarlacc as a semi-sentient creature. It was also believed that the consciousnesses of the Sarlacc's victims joined to create a huge network of awareness. The victims were able to communicate with one another through this ghoulish network. As the Sarlacc absorbed the thoughts of its victims, it would become more and more intelligent, to the point where a Sarlacc could almost predict what its victims would do in its stomachs to try and escape, or when it was hunting its prey.
The only other being known to have escaped the Sarlacc was Zorba the Hutt who was swallowed by the Sarlacc, but was regurgitated shortly thereafter. According to Zorba, the reason for his survival was that no Sarlacc could possibly hope to digest a Hutt.
Darth Vader's secret apprentice, Starkiller, was the only being known to have voluntarily journeyed inside a Sarlacc, on Felucia. He survived the digestive mechanisms and escaped unharmed.
Another mysterious and unique incident occurred with the Tatooine Sarlacc and a girl called Shaara. While she fell into the Great Pit of Carkoon, she was thrown back out before any attempt was made to digest her, unlike the Stormtroopers that had given her chase. There were no clear reasons why the Sarlacc had spared her.
The Sarlacc of Tatooine identified itself closely with one of its first victims, a Choi named Susejo. Oddly enough, Susejo and the beast had seemingly merged in consciousness to the point where the former could control the actions of the latter.
The fibrous vessels in the stomachs connected victims together. The digestive fluids and the Sarlacc's blood traveled through the vessels and into the victims, which were connected in the manner of an electrical current, bringing the victim's minds, thoughts, bodies, and spirits together, keeping them at one with the Sarlacc's body, brain, and soul.
Having long admired the patience of the Sarlacc, the Jedi Order named a form of lightsaber combat, Shii-Cho, after the beast.
...We now return to our regularly scheduled "Sith Pride" posting. 
