Swimming beneath the sands of the vastest deserts on the planet, the Arrakayit wait and listen, hunting and communicating with the vibrations in the ground. As long as a Wailord, these worms prey on anything they can feel through the ground. Pheromosa and Irozei alike tread carefully in Arrakayit territory, moving erratically to prevent detection. Though incredibly long, its body is narrow, making its prey of choice plenty large enough to meet its dietary needs.
All along its segmented body are short, thin shovel-like legs which it uses to dig through sand and propel itself along. It has two methods of hunting, pursuit and ambush. Normally it prefers to bury itself in a vertical burrow and lie in wait, snagging prey with its viciously sharp pincers and dragging them below to eat. Others swim below the sand until they notice the footsteps of potential prey, chase the sound relentlessly, and lunge over the surface to catch their next meal. Steady vibrations attract their attention regardless of their method of choice. Occasionally, they will topple their prey with a particularly powerful Earthquake or Magnitude attack, which they produce by thrashing their bodies wildly beneath the surface.
Arrakayit can use its scissor-like pincers to break up boulders it encounters as it swims through the sand. However, they do not have the strength or patience to bore through solid bedrock, making canyons and mountains a safe haven from them. Pheromosa and Irozei largely live in these rockier regions, but those that choose to migrate across the sandy flatlands to new regions must move as fast as they can lest they become the worm's next meal.
Arrakayit seem to possess a limited degree of intelligence. No specimens have been captured to date, but in the wild individuals have been observed breaching out of the sand and into the air for apparently no purpose. Initially, researchers believed that juveniles were fleeing predation by larger adults. This hypothesis changed once fully-grown adults were observed breaching. Moreover, this breaching behavior seems to coincide with specific vibrational patterns detected by seismographs planted around their habitat. No concrete explanation has been formulated as of yet. It is currently believed that the breaching is play behavior and the vibrations are a form of communication between individuals of the species. Obtaining a captive specimen is currently the highest priority for the study of this species.