Walkthrough: East of both Heahea City and the Dimensional Research Lab is the Hano Grand Resort & Beach, where many tourists come to visit and stay. The Move Tutor of Keldeo and Meloetta's Special Moves can be found in the resort area, while a man on the beach will pay you $20,000 daily to help him chuck Pyukumuku back into the sea.
After arriving to and going into the Resort, you will find the Aether Employee that you help with Team Skull back in Memorial Hill. He will introduce himself as Faba, one of the heads of The Aether Foundation. He will go on to tell you how Aether stands to protect Pokemon Team Skull harms, and they do so on none other than their man-made Island of Aether Paradise. He will then offer to take both you and Hau, who ends up showing up out of nowhere, to this place to see for yourself.
Wild Pokemon (All On Beach):
Rustling Spots (Levels 21-24): Staryu(80%), Sandygast(20%)
Surfing (Levels 21-24): Finneon(30%), Tentacool(30%), Pyukumuku(20%), Wingull(20%)
Suring Special Spots (Levels 21-24): Tentacool(100%)
Zygarde Cells: There are two Zygarde Cells found on the beach.
Trainers:
Golfer Tara (Resort) - Level 25 Oricorio
Golfer Tina (Resort) - Level 25 Oricorio
Veteran Roger (Resort) - Level 27 Trumbeak
Swimmer Logan (Beach) - Level 25 Wishiwashi
Swimmer Alicia (Beach) - Level 25 Psyduck
Swimmer Lawrence (Beach) - Level 24 Wingull, Level 25 Barboach
Swimmer Laura (Beach) - Level 24 Finneon, Level 25 Shellder
Swimmer Roddy (Beach) - Level 25 Gyarados
Swimmer Chelsea (Beach) - Level 25 Pyukumuku
Items:
Metronome (Resort) - Defeat Veteran Roger
TM45 Attract (Resort) - From Machamp Man After Defeating Golfers
TM92 Trick Room (Resort) - From Kahili (Post Game)
Soda Pop (Beach) - From Girl
Pearl String (Beach) - Northeast Waters
Black Glasses (Beach) - On Small Island
Antidote (Beach) - Near Swimmer Chelsea
Dive Ball (Beach) - Near Swimmer Roddy
Post Storyline
Details: In the Post Game during your Eevee Quest, you will find the Leafeon User on Hano Beach.
Leafeon User Linnea - Level 55 Leafeon