Seafoam Islands HGSS · Kanto Area

The Seafoam Islands are a pair of icy islands on Route 20 between Fuchsia City and Cinnabar Island. After the volcano on Cinnabar erupted, Blaine moved his Gym into a cave here, so this is where you earn the Volcano Badge in HGSS. The cave’s lower floors are a boulder-and-current puzzle that leads to Articuno on B4F.
- Region
- Kanto
- Wild Pokémon
- 14
- Items
- 15
- Trainers
- 10
- HMs
- Surf, Strength
- Gym
- Blaine · Fire
Connects to: Route 20
Seafoam Islands on the Kanto Pokégear map
Blaine’s Gym Kanto badge 7 of 8
Gym trainers
| Trainer | Pokémon | Prize |
|---|---|---|
Super NerdCary | Torkoal 53 | ₽2,544 |
Super NerdWaldo | Numel 53 | ₽2,544 |
Super NerdMerle | Magcargo 53 | ₽2,544 |
ScientistLowell | Arcanine 50 | ₽1,600 |
ScientistLinden | Magmar 50 | ₽1,600 |
ScientistDaniel | Ninetales 50 | ₽1,600 |
Gift, legendary and roaming Pokémon
Articuno Lv. 50 · One-off encounter · B4FOn B4F, the lowest floor of the Seafoam Islands; you need Surf and Strength (push boulders into the water to stop the currents).
Wild Pokémon
1F
| Pokémon | Type | Lv. | Morning | Day | Night |
|---|---|---|---|---|---|
Zubat | Poison | 26–28 | 30% | 30% | 30% |
Golbat | Poison | 30–32 | 30% | 30% | 30% |
Psyduck | Water | 26–29 | 30% | 30% | 30% |
Golduck | Water | 32 | 10% | 10% | 10% |
B1F
| Pokémon | Type | Lv. | Morning | Day | Night |
|---|---|---|---|---|---|
Golbat | Poison | 32–34 | 30% | 30% | 30% |
Seel | Water | 32–34 | 30% | 30% | 30% |
Psyduck | Water | 26–28 | 16% | 16% | 16% |
Golduck | Water | 32–34 | 14% | 14% | 14% |
Zubat | Poison | 28–29 | 10% | 10% | 10% |
B2F
| Pokémon | Type | Lv. | Morning | Day | Night |
|---|---|---|---|---|---|
Golbat | Poison | 33–35 | 30% | 30% | 30% |
Seel | Water | 33–35 | 30% | 30% | 30% |
Psyduck | Water | 27–30 | 16% | 16% | 16% |
Golduck | Water | 33–35 | 14% | 14% | 14% |
Zubat | Poison | 29–30 | 10% | 10% | 10% |
B3F
| Pokémon | Type | Lv. | Morning | Day | Night |
|---|---|---|---|---|---|
Golbat | Poison | 34–36 | 30% | 30% | 30% |
Dewgong | WaterIce | 35–36 | 24% | 24% | 24% |
Golduck | Water | 34–36 | 14% | 14% | 14% |
Psyduck | Water | 31–32 | 12% | 12% | 12% |
Zubat | Poison | 31–32 | 10% | 10% | 10% |
Seel | Water | 34 | 10% | 10% | 10% |
B4F
| Pokémon | Type | Lv. | Morning | Day | Night |
|---|---|---|---|---|---|
Golbat | Poison | 38–40 | 30% | 30% | 30% |
Dewgong | WaterIce | 37–38 | 24% | 24% | 24% |
Golduck | Water | 37–38 | 14% | 14% | 14% |
Jynx | IcePsychic | 38–40 | 12% | 12% | 12% |
Psyduck | Water | 34 | 10% | 10% | 10% |
Seel | Water | 34 | 10% | 10% | 10% |
| Pokémon | Type | Lv. | Chance |
|---|---|---|---|
Seel | Water | 30–40 | 60% |
Horsea | Water | 30–40 | 30% |
Slowbro | WaterPsychic | 35–50 | 10% |
| Rod | Pokémon | Lv. | Chance |
|---|---|---|---|
| Old Rod | Magikarp | 10 | 85% |
Krabby | 10 | 15% | |
| Good Rod | Magikarp | 20 | 40% |
Psyduck | 20 | 30% | |
Krabby | 20 | 20% | |
Horsea | 20 | 10% | |
| Super Rod | Gyarados | 40 | 40% |
Horsea | 40 | 30% | |
Kingler | 40 | 15% | |
Seadra | 40 | 15% |
Chances are the game’s encounter slots: grass and caves 20/20/10/10/10/10/5/5/4/4/1/1, with every slot changing by time of day (morning 4:00–9:59, day 10:00–19:59, night 20:00–3:59); surfing 60/30/5/4/1; all three rods 40/30/15/10/5; Rock Smash 80/20; Headbutt 50/15/15/10/5/5. HG and SS mark Pokémon found in only one version. Where to find every Pokémon.
Trainers
| Trainer | Pokémon | Prize |
|---|---|---|
BoarderBryce | Dewgong 55 Lapras 50 | ₽1,600 |
BoarderShaun | Cloyster 55 Dewgong 50 | ₽1,600 |
SkierCady | Delibird 53 | ₽1,696 |
Prize money is four times the level of the trainer’s last Pokémon times the trainer class’s rate (doubled in double battles). Trainers who give you their Pokégear number call when they want a rematch, with stronger teams as you progress.
Items
| Item | How | Where |
|---|---|---|
| Escape Rope | Hidden | 1F |
| Grip Claw | Item ball | B1F |
| Ice Heal | Item ball | B1F |
| Ice Heal | Hidden | B1F |
| Water Stone | Item ball | B2F |
| Pearl | Hidden | B2F |
| Pearl | Hidden | B2F |
| Revive | Item ball | B3F |
| Big Pearl | Item ball | B3F |
| Max Revive | Hidden | B3F |
| Rare Candy | Hidden | B3F |
| Ultra Ball | Item ball | B4F |
| TM13 Ice Beam | Item ball | B4F |
| Zinc | Hidden | B4F |
| TM50 Overheat | Gift | Cinnabar Gym |
Hidden items can be found with the Dowsing MCHN Pokégear app.
Tips
- Blaine’s Gym is inside the islands; his team is Magcargo Lv54, Magmar Lv54 and Rapidash Lv59.
- Water and Ground moves handle Blaine’s team, and beating him earns the Volcano Badge and TM50 Overheat.
- Use Strength to push boulders into the water and block the currents, which lets you Surf through to the lower floors.
- Articuno waits on B4F at Lv50, with a Zinc hidden underneath it.
- TM13 Ice Beam is in the northeast corner of B4F.
- Jynx appears on B4F at 12%, Dewgong on B3F and B4F, and Surfing on B4F can bring Slowbro.
- Boarders and a Skier on B2F use Ice types up to Lv55.
Walkthrough: Part 21: Mt. Moon, Cinnabar Island and Blaine · Part 24: Legendary Pokémon and Kanto Loose Ends
More pictures
FAQ
Where is Blaine’s Gym in HeartGold and SoulSilver?
In the Seafoam Islands on Route 20, since the volcano destroyed the old Gym on Cinnabar Island.
How do you get to Articuno in HGSS?
Surf to the Seafoam Islands and use Strength to push boulders into the water, stopping the currents; Articuno is on B4F at Lv50.
Where is TM13 Ice Beam in HeartGold and SoulSilver?
On B4F of the Seafoam Islands, in the northeast corner.
Where can you catch Jynx in HGSS?
On B4F of the Seafoam Islands, at a 12% rate.
What Pokémon can you catch in Seafoam Islands in HeartGold and SoulSilver?
14 species: Zubat, Golbat, Psyduck, Golduck, Seel, Dewgong, Jynx, Horsea, Slowbro, Magikarp, Krabby, Gyarados, Kingler, Seadra.
Sources & picture credits
- Seafoam Islands (Bulbapedia)
- pret/pokeheartgold (decompiled game data)
- Picture: Seafoam_Islands_B4F_HGSS.png
- Picture: Seafoam_Islands_B3F_HGSS.png
- Picture: Seafoam_Islands_B1F_HGSS.png
Guide text is original retrogameindex writing, checked against Bulbapedia and the game data. Wild Pokémon and encounter chances, items, trainers, rematch teams, gifts and shops come from the pret/pokeheartgold decompilation, and the Pokémon sprites and dungeon entrance pictures are drawn from the game’s own graphics in it. The position maps are the Gold/Silver wiki’s Pokégear map renders. Location pictures and trainer sprites © Nintendo / Creatures / GAME FREAK, archived from the Pokémon Wiki on Fandom (listed on the image gallery).





































