Corsola is a small, pink, roundish Pokémon with branch-like growths on its back, which are similar to coral. There is a smaller, blunt horn on its forehead, and it has black, oval eyes. It has a white underside, which speckles towards the sides. Its four legs and two arms are blunt and stubby. Found in the warm shallow waters of southern seas, Corsola requires clean water to live. If its habitat is dirty, the growths on its back become discolored and degenerate. However, when it is healthy, its growths regularly shed and grow back. It is able to regrow them over the course of a single night. It forms large social groups. Occasionally these groups get so large that people may live atop them, as is the case in Pacifidlog Town. Corsola horn is a prized material, used for jewellery and carving as seen in the anime. Smaller Pokémon like Seadra and Luvdisc are sometimes sheltered by Corsola's branches, and even offer it protection from foe.
In the Alola region, Mareanie and Toxapex are natural predators of Corsola.
In the main series
Major appearances
Misty has a Corsola she caught in the Whirl Islands in A Corsola Caper!. It wandered into a group of Corsola raised by a family living in Yellow Rock Isle. It caused trouble for them as it was very energetic and tackled all the Corsola, scaring them away. Things were solved when Misty battled and caught the Coral Pokémon in a Lure Ball.
Other
Corsola made its main series debut in Around the Whirlpool, under the ownership of Professor Elm. It has a fondness for pools.
Multiple Corsola appeared in A Corsola Caper! alongside Misty's; they were all under the ownership of Andrea and her family. They were scared off by Misty's Corsola and the group spent the episode trying to recover all of them.
A Corsola appeared in The Great Eight Fate!, under the ownership of Juan. It was one of his Pokémon used in the Sootopolis City Water Exhibit. It and Juan's other Pokémon were captured by Team Rocket, but they all worked together to escape.
Minor appearances
Corsola debuted in Pikachu's PikaBoo.
Misty started her little speech about being the best Water Pokémon Trainer after she spotted four Corsola in Fly Me to the Moon.
A Corsola appeared in Takin' It on the Chinchou, where it was standing on a wave barrier.
A Corsola was used by one of the students of the Pokémon Trainers' School in Gonna Rule The School!.
Multiple Corsola appeared in Pokémon Ranger and the Temple of the Sea.
In Pokémon Mystery Dungeon: Team Go-Getters Out of the Gate!, after Team Meanies bought everything from the Kecleon Shop, Auntie Kangaskhan gave the team free Corsola Twigs. These later became helpful for defeating Skarmory and rescuing Pikachu and Pichu.
A Corsola appeared in Up Close and Personable!.
A Corsola belonging to a Coordinator appeared in Dressed for Jess Success!, where it was seen participating in the Battle Stage of the Lilypad Contest.
A Coordinator's Corsola appeared in Yes in Dee Dee, It's Dawn!, where it was seen participating in a Double Performance along with a Hitmontop during the Daybreak Contest.
A Corsola made a cameo appearance in Going for the Gold!, in which Serena failed to capture it.
Three Corsola appeared in Alola to New Adventure!, with two belonging to two different Trainers and the other one being wild.
A Corsola appeared in The Guardian's Challenge!, A Shocking Grocery Run!, That's Why the Litten is a Scamp!, and Night of a Thousand Poses!, where it was residing in Professor Kukui's lab.
Three Corsola appeared in Yo, Ho, Ho! Go, Popplio!, with two being wild and one appearing in a fantasy. One of the wild Corsola was walking along an island where Ash, his classmates, and Professor Kukui were taking a break from fishing.
Five Corsola appeared in The Sun, the Scare, the Secret Lair!. Ash attempted to catch one, only for them to swim off as a group of Mareanie arrive.
Six Corsola appeared in Partner Promises!.
A Corsola appeared in A Shivering Shovel Search!, when Pikachu and Popplio were searching for Palossand's lost shovel underwater.
Three Corsola appeared in The Island Whisperer!.
A wild Corsola appeared in Alola, Kanto!.
Four Corsola appeared in SM071.
Pokédex entries
Episode
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Pokémon
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Source
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Entry
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EP210
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Corsola
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Ash's Pokédex
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Corsola, the Coral Pokémon. A combination of both Water and Rock types. It sheds and regrows the horns on its head numerous times.
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In Pokémon Generations
A wild Corsola appeared in the waters that surrounded the Seafloor Cavern in The Cavern.