Garstella

Sun: It plunges the poison spike on its head into its prey. When the prey has weakened, Mareanie deals the finishing blow with its 10 tentacles.

Moon: It’s found crawling on beaches and seafloors. The coral that grows on Corsola’s head is as good as a five-star banquet to this Pokémon.

Ultra Sun: They eat Corsola branches, so Mareanie are hated by craftsmen who work with Corsola branches that have naturally fallen off.

Ultra Moon: Aside from its head, its body parts regenerate quickly if they’re cut off. After a good night’s sleep, Mareanie is back to normal.

Sword: The first symptom of its sting is numbness. The next is an itching sensation so intense that it’s impossible to resist the urge to claw at your skin.

Shield: Unlike their Alolan counterparts, the Mareanie of the Galar region have not yet figured out that the branches of Corsola are delicious.