Walkthrough
With both the Fuchsia City Gym and Saffron City Gym defeated, you will next need to venture to Cinnabar Island to find the seventh Pokemon Gym. In order to reach Cinnabar Island, you will first need to surf your way across Route 19, found just south of Fuchsia City. Remember, you can learn the Sea Skim Technique from the surfer near Lapras in Fuchsia City, allowing you to travel across waters. Route 19 is a small sea route, containing just a few Wild Pokemon and Trainers found in the water.
Wild Pokemon
Waters:
Tentacool (30%): Levels 37-42
Staryu (30%): Levels 37-42
Magikarp (30%): Levels 37-42
Tentacruel (9%): Levels 37-42
Starmie (1%): Levels 37-42
Waters - Special Spawns:
Lapras: Levels 37-42
Sky:
Pidgey (60%): Levels 3-56
Pidgeotto (35%): Levels 3-56
Pidgeot (5%): Levels 3-56
Sky - Special Spawns:
Dragonite: Levels 3-56
Charizard: Levels 3-56
Articuno: Levels 3-56
Zapdos: Levels 3-56
Moltres: Levels 3-56
Trainers
Swimmer Richard: Level 38
Swimmer Reece: Level 38 Dratini
Beauty Alice: Level 41 Golduck, Level 41 Cloyster
Swimmer David: Level 42 Seel, Level 42 Seel, Level 42 Seadra
Swimmer Axle: Level 42 Poliwhirl
Swimmer Douglas: Level 42 Gyarados
Beauty Anya: Level 41 Seel, Level 41 Seaking
Beauty Connie: Level 41 Vaporeon
Obtainable Items
Full Heal: Near Northern Route Entrance
Poke Balls: Defeat Swimmer Richard
Poke Balls: Defeat Swimmer Reece
Poke Balls: Defeat Beauty Alice
Poke Balls: Defeat Swimmer David
Poke Balls: Defeat Swimmer Axle
Poke Balls: Defeat Swimmer Douglas
Poke Balls: Defeat Beauty Anya
Poke Balls: Defeat Beauty Connie
Post Game
Walkthrough
After defeating the Elite Four and starting the Master Trainers Challenge, you will find a number of Master Trainers on Route 19. In total, there will be three Master Trainers to defeat.
Trainers
Swimmer Shelly (Master Trainer): Level 70 Shellder
Swimmer Beverly (Master Trainer): Level 70 Horsea
Swimmer Jo (Master Trainer): Level 70 Staryu