The exact nature of sarlacc is an ongoing debate, according to die-hard fans above Wookieepedia. Sarlaccs begins as a sporophyte, like a fungus, leading some scholars (in the universe) to consider it a carnivorous plant, while others insist that it has the necessary degree of susceptibility to be considered animals. Either way, getting into the grasping range of its tentacles, which it uses to trap prey, isn’t worth learning.
Sarlaccs, as adults, burrow deep into the ground, often taking up residence 100 meters under the sand, where they go unnoticed until it is too late. While they can move to new locations, they tend to be motionless once embedded somewhere.
The sarlacc’s mouth resembles that of a turtle, complete with a thick tongue to pull prey deep into its belly. Once there, victims of sarlacc find themselves with slow digestion. It can take thousands of years to digest sarlacc, thanks to its low acidity stomach bile. Luckily, if you eat one, you’ll starve in its stomach before the acid kills you.
That’s only fine with sarlacc. They need very little food to survive relative to their body mass, and they live for a minimum of 30,000 years. Their only known predator is dragon krayt. Honestly, with so many nightmare beasts calling it home, it’s a mystery why anyone who could get to the aliens would choose to live on Tatooine.
https://www.looper.com/720411/the-sarlacc-in-star-wars-explained/ Star Wars Sarlacc Explained