Expects for Pokemon Sun and Moon

Since the new region for Pokemon Sun & Moon is called Aloha (which is based off of Hawaii), there are a few things I think might happen/appear in the games:

1.) All eight islands would be presented in the region, and since it's traditional in the Pokemon games to have eight Gyms for the player to battle in, maybe there would be one Gym per island.

2.) The Gym badges would shells (just like in the Orange Island season of the anime). For the same reason as #01, plus there are different types of shells to use.

Conch, Oyster, Clam, Scallop, Puka, Venus Comb, Cone, Cowry, etc.

If not, they can always use other things that get washed-up on beaches to use as badges. Like sand dollars, coral, and shark teeth (or in the Pokemon case, Sharpedo teeth).

3.) Use Dive (like in the Gen 3 games) to explore the bottom of the ocean for Pokemon & items.