Pokémon Ultra Sun and Ultra Moon/The Island Challenge

The Island Challenge replaces gyms in Sun and Moon and Ultra Sun and Ultra Moon: It involves traveling to each of the four islands of Alola: Melemele Island, Akala Island, Poni Island, and Ula'Ula Island.

It is also mandatory to complete a trial, led by Alola's seven trial captains. Each trial involves a unique challenge, followed by battling a Totem Pokémon. Before the battle, Totem Pokemon will usually get a raise in stats. Once the Totem Pokemon has been defeated, the trial is considered to have been completed. You will also have received a Z-Crystal. Once all trials on a particular island are finished, you must battle the Island Kahuna, a strong trainer, in order to progress to the next island.

List of trials:

Melemele Island

1. Ilima

• Location: Verdant Cavern
• Specialty: Normal
• Challenge: Locate and battle 3 Pokemon.
• Totem: Gumshoos (Ultra Sun), Alolan Raticate (Ultra Moon) Level 12
• Boost: Defense

Kahuna: Hala

• Specialty: Fighting
• Pokemon: Machop (Level 15), Makuhita (Level 15), Crabrawler (Level 16)

Akala Island

2. Lana

• Location: Brooklet Hill
• Specialty: Water
• Challenge: Find and battle 2 Pokemon.
• Totem: Araquanid Level 20
• Boost: Speed

3. Kiawe

• Location: Wela Volcano Park
• Specialty: Fire
• Challenge: Identify the differences between two dances.
• Totem: Marowak Level 22
• Boost: Speed

4. Mallow

• Location: Lush Jungle
• Specialty: Grass
• Challenge: Find 3 ingredients for a special dish. If you chose an ingredient that a Pokemon has had an eye on, you'll be forced to battle that Pokemon.
• Totem: Lurantis Level 24
• Boost: Speed

Kahuna: Olivia

• Specialty: Rock
• Pokemon: Anorith (Level 27), Lileep (Level 27), Lycanroc (Level 28)

Ula'Ula Island

5. Sophocles

• Location: Hokulani Observatory
• Specialty: Electric
• Challenge: Complete a minigame involving moving Charjabugs into certain patterns.
• Totem: Togedemaru Level 33
• Boost: Defense

6. Acerola

• Location: Thrifty Megamart
• Specialty: Ghost
• Challenge: Take a picture of the Pokemon messing around the store and Mimikyu.
• Totem: Mimikyu Level 35
• Boost: All stats

Kahuna: Nanu

• Specialty: Dark
• Pokemon: Sableye (Level 43), Krokorok (Level 43), Persian (Level 44)

Poni Island

7. ???

• Location: Vast Poni Canyon
• Specialty: Dragon
• Challenge: Battle Jangmo-o and Hakamo-o while heading towards the Z-Crystal stand.
• Totem: Kommo-o Level 49
• Boost: All stats

8. Mina

• Location: Vast Poni Canyon
• Specialty: Fairy
• Challenge: Battle Mina, and rematch all of the other Trial Captains to receive a petal from them. (Excluding Lana)
• Totem: Ribombee Level 55
• Boost: All stats

Kahuna: Hapu

• Specialty: Ground
• Pokemon: Golurk (Level 53), Flygon (Level 53), Mudsdale (Level 54), Gastrodon (Level 53)