Pokémon Sun and Moon/The Island Challenge

The Island Challenge replaces gyms in Sun and Moon: it is a rite of passage in Alola, that involves traveling to each of the four islands of the region: Melemele Island, Akala Island, Poni Island, and Ula'Ula Island.

It is also necessary to complete a trial, led by Alola's seven trial captains. Each trial involves a special challenge, followed by a strong Totem Pokémon. Once the Totem is defeated, the trial is considered to be finished. 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:

1. Ilima

 * Location: Verdant Cavern
 * Special type: Normal
 * Challenge: Find and battle 2 Pokemon.
 * Totem: Gumshoos (Sun), Alolan Rattata (Moon)

Kahuna: Hala

 * Special type: Fighting

2. Lana

 * Location: Brooklet Hill
 * Special type: Water
 * Challenge: Find and battle 2 Pokemon.
 * Totem: Wishiwashi

3. Kiawe

 * Location: Wela Volcano Park
 * Special type: Fire
 * Challenge: Identify the difference between two dances.
 * Totem: Alolan Marowak

4. Mallow

 * Location: Lush Jungle
 * Special type: Grass
 * Challenge: Find 4 ingredients for a special dish.
 * Totem: Lurantis

Kahuna: Olivia

 * Special type: Rock

5. Sophocles

 * Location: Hokulani Observatory
 * Special type: Electric
 * Challenge: Identify various sounds.
 * Totem: Vikavolt

6. Acerola

 * Location: Thrifty Megamart
 * Special type: Ghost
 * Challenge: Take a picture of the Totem Pokemon.
 * Totem: Mimikyu

Kahuna: Nanu

 * Special type: Dark

7. Mina

 * Location: ???
 * Special type: Fairy
 * Challenge: ???
 * Totem: ???

Kahuna: Hapu

 * Special type: Ground