Part 7: Marsh Badge — the southern sea and Cinnabar Island
Routes 19, 20 and 21, the five floors of the Seafoam Islands with Articuno at the bottom, Cinnabar Island and the four floors of the Pokémon Mansion, up to Blaine. The lab on Cinnabar revives the Helix, Dome and Old Amber fossils into an Omanyte, a Kabuto or an Aerodactyl, and has the Metronome tutor in its research room. Sabrina's badge is what lets you use Rock Smash, so the rocks you have been walking past since Mt. Moon open up here.
Marsh Badge — the southern sea and Cinnabar Island opens 15 areas. There are 53 trainers standing in them. The fight at this checkpoint is Blaine.
Where to go
Cinnabar Island
Wild: Magikarp 100% · Lv 5, Goldeen 80% · Lv 10, Horsea 80% · Lv 15, Krabby 80% · Lv 10 +13 more
Trainers: Gambler Ryan Lv 42
Pick up: TM38 Fire Blast, Light Clay, Shell Bell
Pokémon Mansion 1F
Wild: Ponyta 50% · Lv 28-34, Koffing 30% · Lv 30, Grimer 20% · Lv 30-32, Magmar 20% · Lv 34-38 +4 more
Trainers: Gentleman Justice Lv 72, Scientist Ted Lv 29, Youngster Johnson Lv 34
Pick up: Black Sludge, Carbos, Escape Rope, Protein
Pokémon Mansion 2F
Wild: Ponyta 50% · Lv 28-34, Koffing 30% · Lv 30, Grimer 20% · Lv 30-32, Magmar 20% · Lv 34-38 +4 more
Trainers: Burglar Arnie Lv 34
Pick up: Calcium, Charizardite X, HP Up, Zinc
Pokémon Mansion 3F
Wild: Ponyta 50% · Lv 28-34, Koffing 30% · Lv 30, Grimer 20% · Lv 30-32, Magmar 20% · Lv 34-38 +4 more
Trainers: Burglar Simon Lv 38, Scientist Braydon Lv 33
Pick up: Charcoal, Charizardite Y, Iron, Max Potion, Rare Candy (hidden)
Pokémon Mansion B1F
Wild: Ponyta 50% · Lv 28-34, Koffing 30% · Lv 30, Grimer 20% · Lv 30-32, Magmar 20% · Lv 34-38 +5 more
Trainers: Burglar Lewis Lv 34, Scientist Ivan Lv 34
Pick up: TM14 Blizzard, TM22 Solar Beam, Elixir (hidden), Full Restore, Old Sea Map
Route 19
Wild: Magikarp 100% · Lv 5, Horsea 90% · Lv 5-40, Tentacool 90% · Lv 5-40, Goldeen 80% · Lv 10 +5 more
Trainers: Sis and Bro Lia & Luc Lv 30, Swimmer♀ Alice Lv 30, Swimmer♀ Anya Lv 27, Swimmer♀ Connie Lv 29, Swimmer♂ Axle Lv 27, Swimmer♂ David Lv 29 +5 more
Route 20
Wild: Magikarp 100% · Lv 5, Horsea 90% · Lv 5-40, Tentacool 90% · Lv 5-40, Goldeen 80% · Lv 10 +5 more
Trainers: Dragon Tamer Roger Lv 30, Engineer Dylan Lv 72, Picnicker Irene Lv 30, Picnicker Missy Lv 31, Swimmer♀ Melissa Lv 31, Swimmer♀ Nora Lv 30 +5 more
Pick up: Slowbronite, Stardust (hidden)
Route 21 North
Wild: Magikarp 100% · Lv 5, Tangela 100% · Lv 28-32, Horsea 90% · Lv 5-40, Tentacool 90% · Lv 5-40 +11 more
Trainers: Cooltrainer Anri Lv 32, Fisherman Ronald Lv 28, Fisherman Wade Lv 27, Sis and Bro Lil & Ian Lv 33, Swimmer♂ Spencer Lv 33
Pick up: Pearl (hidden)
Route 21 South
Wild: Magikarp 100% · Lv 5, Horsea 90% · Lv 5-40, Tentacool 90% · Lv 5-40, Goldeen 80% · Lv 10 +5 more
Trainers: Fisherman Claude Lv 31, Fisherman Nolan Lv 33, Juggler Johan Lv 32, Swimmer♂ Jack Lv 37, Swimmer♂ Jerome Lv 33, Swimmer♂ Roland Lv 32
Seafoam Islands 1F
Wild: Seel 50% · Lv 22-26, Jynx 30% · Lv 37, Krabby 20% · Lv 26-28, Squirtle 20% · Lv 3-8 +4 more
Pick up: Ice Heal, Never-Melt Ice (hidden)
Seafoam Islands B1F
Wild: Seel 50% · Lv 22-26, Jynx 30% · Lv 37, Krabby 20% · Lv 26-28, Squirtle 20% · Lv 3-8 +4 more
Pick up: Gyaradosite, Icy Rock (hidden), Revive, Water Stone
Seafoam Islands B2F
Wild: Seel 50% · Lv 22-26, Jynx 30% · Lv 37, Krabby 20% · Lv 26-28, Squirtle 20% · Lv 3-8 +4 more
Pick up: Big Pearl, Power Stone
Seafoam Islands B3F
Wild: Magikarp 100% · Lv 5, Seel 90% · Lv 20-30, Krabby 80% · Lv 20-30, Staryu 60% · Lv 10 +9 more
Trainers: Black Belt Michael Lv 55
Pick up: Nugget (hidden)
Seafoam Islands B4F
Wild: Magikarp 100% · Lv 5, Seel 90% · Lv 20-30, Krabby 80% · Lv 20-30, Staryu 60% · Lv 10 +10 more
Pick up: Ultra Ball, Water Stone (hidden)
Cinnabar Island Gym
Trainers: Burglar Dusty Lv 37, Burglar Quinn Lv 36, Burglar Ramon Lv 41, ★ Blaine Lv 47, Blaine (postgame rematch) Lv 65, Blaine (rematch) Lv 47 +4 more
★ Blaine — Cinnabar Island Gym
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Growlithe Lv 42 Fire | Bite Roar Take Down Fire Blast | HP55Attack70Defense45Sp. Atk70Sp. Def50Speed60Total350 | |
 | Ponyta Lv 40 Fire | Stomp Bounce Fire Spin Fire Blast | HP50Attack85Defense55Sp. Atk65Sp. Def65Speed90Total410 | |
 | Rapidash Lv 42 Fire | Stomp Bounce Fire Spin Fire Blast | HP65Attack100Defense70Sp. Atk80Sp. Def80Speed105Total500 | |
 | Arcanine Lv 47 Fire | Bite Roar Take Down Fire Blast | HP90Attack110Defense80Sp. Atk100Sp. Def80Speed95Total555 |