HeartGold & SoulSilver Seafoam Islands

The frozen sea caves south of Cinnabar shelter Blaine's rebuilt fire gym, moved here after the volcano took the old one. Articuno roosts deeper in the same ice, guarding the cold at their heart.

Seafoam Islands is in Kanto. In the story you arrive from Route 20 through its entrance and it comes before Route 19.

SEAFOAM ISLANDS MAP

The Seafoam Islands sink five tiers of sea cave, Surf carrying you between them and ice-slide puzzles steering your path, with Strength boulders to shove along the way.

HeartGold & SoulSilver

Seafoam Islands Walkthrough

10 trainers 1 in the steps 8 items 18 species

1F

0 TRAINERS · 0 ITEMS · 8 SPECIES
1
Just inside the Seafoam Islands entrance you pass the Cinnabar Gym doors, saved for last.
  1. Walk north, then turn west short of the gym doors.
  2. Head north to the stairs down to B1F.

B1F

0 TRAINERS · 1 ITEM · 9 SPECIES
2
You leave the B1F landing only by pushing a StrengthMoveStrengthNormalClassPhysicalPower80Accuracy100%PP15The foe is slugged with a punch thrown at maximum power. It can also be used to move boulders. boulder.
  1. Shove the StrengthMoveStrengthNormalClassPhysicalPower80Accuracy100%PP15The foe is slugged with a punch thrown at maximum power. It can also be used to move boulders. boulders aside and follow the east side to the Grip Claw at the end of the path on the northern edge.
  2. Follow the long passage west to stairs down into a closed pocket of B2F.
Grip Claw
Blocked pathStrength Boulderx6
HM04 Strength
Plain Badge

Requires HM04 StrengthMoveStrengthNormalClassPhysicalPower80Accuracy100%PP15The foe is slugged with a punch thrown at maximum power. It can also be used to move boulders. + Plain Badge

B2F

3 TRAINERS · NONE IN THE STEPS · 1 ITEM · 9 SPECIES
3
Ice splits B2F, and your first pocket only leads back up.
  1. Take the Water StoneWater StoneEVOLUTIONA peculiar stone that makes certain species of Pokemon evolve. It is a clear, light blue.B2F, near the middle of the southern edge of the room near the middle of the southern edge of the room. East stairs climb to B1F; walk north and west to stairs back down.
  2. Slide north across the ice until Skier CadySkier Cady₱1,696DelibirdLv 53Weak to4×RockFireElectricSteel battles you, then east until Boarder ShaunBoarder Shaun₱1,600CloysterLv 55DewgongLv 50Weak toElectricGrassFightingRock battles you.
  3. Boarder BryceBoarder Bryce₱1,600DewgongLv 55LaprasLv 50Weak toElectricGrassFightingRock battles you below the next slide south; slide east to the stairs down.
Water Stone

B3F

0 TRAINERS · 2 ITEMS · 10 SPECIES
4
Sliding on the B3F ice, you stop only at a rock or wall.
  1. Walk south along the east side to the hidden Max Revive between two rocks near the south-east corner.
  2. Take the stairs just north of it down to a sealed B4F corner, then climb back.
  3. Slide west to the southwest stairs and ride the western ice puzzle north to the Big Pearl on its other side.
Max Revive
Big Pearl

B4F

0 TRAINERS · 2 ITEMS · 17 SPECIES
5
That sealed corner holds TM13 Ice BeamTMTM13 Ice BeamIceClassSpecialPower95Accuracy100%PP10The foe is struck with an icy-cold beam of energy. It may also freeze the target solid.WhereB4F, north-east corner in the north-east corner, so take it first.
  1. Take the southwest stairs, surf to the north-east stairs and climb to a small B3F pocket.
  2. Its other stairs reach B2F, where a passage south and east ends at stairs down.
  3. Walk north to the next stairs, then south; surf west, land below Articuno to face it, then take the hidden ZincZincMEDICINE · VITAMINA nutritious drink for Pokemon. It raises the base Sp. Def (Special Defense) stat of a single Pokemon.B4F, underneath Articuno (hidden) underneath where it stood.
TM13 Ice Beam
Legendary encounter
ArticunoLv 50
Zinc

B3F

0 TRAINERS · 1 ITEM · 10 SPECIES
6
After Articuno, the climb home crosses a west side of B3F you could not reach before.
  1. SurfMoveSurfWaterClassSpecialPower95Accuracy100%PP15It swamps the entire battlefield with a giant wave. It can also be used for crossing water. the lake to the northwest stairs; find the hidden Rare Candy on a rock south-east of the north-west ladder.
  2. Walk south down the west side to stairs up to B2F, then east to stairs up to B1F.
  3. Push the B1F boulders east and follow the passage back up to the Cinnabar Gym doors.
Rare Candy

Cinnabar Gym

7 TRAINERS · 1 IN THE STEPS · 1 ITEM · 0 SPECIES
7
Blaine waits at the back, but his trainers stand in the way.
  1. Scientist LowellScientist Lowell₱1,600ArcanineLv 50Weak toWaterGroundRock battles you north of the entrance; face Super Nerd CarySuper Nerd Cary₱2,544TorkoalLv 53Weak toWaterGroundRock to the east.
  2. Super Nerd MerleSuper Nerd Merle₱2,544MagcargoLv 53Weak to4×Water4×GroundFightingRock battles you on the west side; face Leader BlaineLeader Blaine₱7,080MagcargoLv 54MagmarLv 54RapidashLv 59Weak to4×Water4×GroundFightingRock, who hands you TM50 OverheatTMTM50 OverheatFireClassSpecialPower140Accuracy90%PP5The user attacks the foe at full power using fiery energy. It also sharply reduces the user's Sp. Atk.WhereGift from Blaine after you beat him in his Cinnabar Gym inside Seafoam Islands after you beat him.
  3. Leave the way you came in, back to Route 20.
Gym Leader · fight 1Leader BlaineMagcargo · Magmar · RapidashLv 54–59₱7,080
TM50 Overheat

Pokemon Encounters

Articuno rests deep in the frozen caves at level 50, the Ice legendary worth the trek through the islands. Seel and the Slowpoke line draw collectors otherwise, with Slowbro reaching level 50 and Horsea waiting on the rods.

Method
Floor
Type
✦Special encounters1
#144Articuno
Legendary Lv 50
▾1F8
Walking8
#042Golbat
30% - Lv 30–32
#054Psyduck
30% - Lv 26–29
#041Zubat
30% - Lv 26–28
#359Absol
20% - Lv 28–29
Hoenn Sound
#436Bronzor
20% - Lv 28–29
Sinnoh Sound
#433Chingling
20% - Lv 30–32
Sinnoh Sound
#296Makuhita
20% - Lv 30–32
Hoenn Sound
#055Golduck
10% - Lv 32
▾B1F9
Walking9
#042Golbat
30% - Lv 32–34
#086Seel
30% - Lv 32–34
#359Absol
20% - Lv 28–34
Hoenn Sound
#436Bronzor
20% - Lv 28–34
Sinnoh Sound
#433Chingling
20% - Lv 32–34
Sinnoh Sound
#296Makuhita
20% - Lv 32–34
Hoenn Sound
#054Psyduck
16% - Lv 26–28
#055Golduck
14% - Lv 32–34
#041Zubat
10% - Lv 28–29
▾B2F9
Walking9
#042Golbat
30% - Lv 33–35
#086Seel
30% - Lv 33–35
#359Absol
20% - Lv 30–35
Hoenn Sound
#436Bronzor
20% - Lv 30–35
Sinnoh Sound
#433Chingling
20% - Lv 33–35
Sinnoh Sound
#296Makuhita
20% - Lv 33–35
Hoenn Sound
#054Psyduck
16% - Lv 27–30
#055Golduck
14% - Lv 33–35
#041Zubat
10% - Lv 29–30
▾B3F10
Walking10
#042Golbat
30% - Lv 34–36
#087Dewgong
24% - Lv 35–36
#359Absol
20% - Lv 32–34
Hoenn Sound
#436Bronzor
20% - Lv 32–34
Sinnoh Sound
#433Chingling
20% - Lv 34–36
Sinnoh Sound
#296Makuhita
20% - Lv 34–36
Hoenn Sound
#055Golduck
14% - Lv 34–36
#054Psyduck
12% - Lv 31–32
#086Seel
10% - Lv 34
#041Zubat
10% - Lv 31–32
▾B4F23
Walking10
#042Golbat
30% - Lv 38–40
#087Dewgong
24% - Lv 37–38
#359Absol
20% - Lv 34
Hoenn Sound
#436Bronzor
20% - Lv 34
Sinnoh Sound
#433Chingling
20% - Lv 38
Sinnoh Sound
#296Makuhita
20% - Lv 38
Hoenn Sound
#055Golduck
14% - Lv 37–38
#124Jynx
12% - Lv 38–40
#054Psyduck
10% - Lv 34
#086Seel
10% - Lv 34
Surf3
#086Seel
60% - Lv 30–40
#116Horsea
30% - Lv 30–40
#080Slowbro
10% - Lv 35–50
Fish10
Old Rod2
#129Magikarp
85% - Lv 10
#098Krabby
15% - Lv 10
Good Rod4
#129Magikarp
40% - Lv 20
#054Psyduck
30% - Lv 20
#098Krabby
20% - Lv 20
#116Horsea
10% - Lv 20
Super Rod4
#130Gyarados
40% - Lv 40
#116Horsea
30% - Lv 40
#099Kingler
15% - Lv 40
#117Seadra
15% - Lv 40
Legendary
Articuno
#144

Articuno

IceFlying
Level
50
EV yield
3 Sp. Def
Acquisition
Legendary
How to get itB4F
Encounter in Seafoam Islands after obtaining the National Pokedex
at B4F
Sealed locationB4FSeafoam IslandsView on map
One-of-a-kind. You only get a single shot per cartridge — knock it out or run, and it is gone for the run. Save before engaging.

ITEMS

Articuno's frozen cave holds two of the best attacking TMs around, TM13 Ice Beam and TM50 Overheat. A Water Stone, a Grip Claw, and a Zinc wait further inside, with hidden treasures for divers.

Source
Floor
TM2
TM13 Ice Beam
B4F
TM50 Overheat
Cinnabar Gym
Vitamin2
Rare Candy
B3F
Zinc
B4F
Item ball5
Grip Claw
B1F
Water Stone
B2F
Big Pearl
B3F
Revive
B3F
Ultra Ball
B4F
Hidden4
Escape Rope
1F
Ice Heal
B1F
Pearl
B2F
Max Revive
B3F
TM

TM13 Ice Beam

Found on B4F · north-east corner
Move
Ice BeamIceSpecial
Power
95
Accuracy
100%
PP
10

Ice Beam deals damage and has a 10% chance of freezing the target.

TM2
TM

TM13 Ice Beam

Found on B4F · north-east corner
Move
Ice BeamIceSpecial
Power
95
Accuracy
100%
PP
10

Ice Beam deals damage and has a 10% chance of freezing the target.

TM

TM50 Overheat

Found on Cinnabar Gym · Gift from Blaine after you beat him in his Cinnabar Gym inside Seafoam Islands
Move
OverheatFireSpecial
Power
140
Accuracy
90%
PP
5

Overheat deals damage but lowers the user's Special Attack by two stages after attacking.

Vitamin2
VITAMIN

Rare Candy

Found on B3F · on a rock south-east of the north-west ladder (hidden)
Effect

A candy that is packed with energy. It raises the level of a single Pokemon by one.

VITAMIN

Zinc

Found on B4F · underneath Articuno (hidden)
Effect

A nutritious drink for Pokemon. It raises the base Sp. Def (Special Defense) stat of a single Pokemon.

Item ball5
ITEM BALL

Grip Claw

Found on B1F · northern edge, at the end of the path behind the Strength boulders on the east side
Effect

A Pokemon held item that extends the duration of multiturn attacks like Bind and Wrap.

ITEM BALL

Water Stone

Found on B2F · near the middle of the southern edge of the room
Water Stone evolves· 5 species
PoliwrathWaterFighting
CloysterWaterIce
StaryuWater
StarmieWaterPsychic
EeveeNormal
LombreWaterGrass
LudicoloWaterGrass

Evolves a Poliwhirl into Poliwrath, a Shellder into Cloyster, a Staryu into Starmie, an Eevee into Vaporeon, or a Lombre into Ludicolo.

ITEM BALL

Big Pearl

Found on B3F · on the other side of the western ice puzzle
Effect

A quite-large pearl that sparkles in a pretty silver color. It can be sold at a high price to shops.

ITEM BALL

Revive

Found on B3F · east of the south-west ladder
Effect

A medicine that revives a fainted Pokemon. It restores half the Pokemon's maximum HP.

ITEM BALL

Ultra Ball

Found on B4F · north island
Effect

An ultra-performance Ball that provides a higher Pokemon catch rate than a Great Ball.

Hidden4
HIDDEN

Escape Rope

Found on 1F · on a rock on the northern side of the south-east entrance room (hidden)
Effect

A long, durable rope. Use it to escape instantly from a cave or a dungeon.

HIDDEN

Ice Heal

Found on B1F · on the ledge in the middle of the room B1F, on the white-colored area in the center of the room (hidden)
Effect

A spray-type medicine. It defrosts a Pokemon that has been frozen solid.

HIDDEN

Pearl

Found on B2F · on a rock in the north-west corner of the room (hidden) B2F, on a rock north of the south-easternmost ladder (hidden)
Effect

A somewhat-small pearl that sparkles in a pretty silver color. It can be sold cheaply to shops.

HIDDEN

Max Revive

Found on B3F · between two rocks near the south-east corner (hidden)
Effect

A medicine that revives a fainted Pokemon. It fully restores the Pokemon's HP.

TRAINERS

The Seafoam caves are patrolled by Skiers and Boarders on Ice and Water teams, a cold-weather crew in the mid-50s. Blaine's gym relocated here after Cinnabar erupted, so his Fire-types wait at the far end too.

Class
Floor
Gym leader1
BlaineLv 59₱7,080
Super Nerd3
CaryLv 53₱2,544
WaldoLv 53₱2,544
MerleLv 53₱2,544
Scientist3
LowellLv 50₱1,600
DanielLv 50₱1,600
LindenLv 50₱1,600
Trainer3
CadyLv 53₱1,696
ShaunLv 55₱1,600
BryceLv 55₱1,600
SCIENTIST

Lowell

Party
1
Highest Lv
50
Reward
₱1,600
Party
Fire
AbilityIntimidateNatureCalmItem-
Overheat
Extreme Speed
Fire Fang
Thunder Fang
Team weak to3 types
Type
2x weakness(3)
WATER
GROUND
ROCK
Win: ₱1,600

Seafoam Islands Guide

  • Articuno hides inside the Seafoam Islands at Level 50. Reaching it takes Surf, Waterfall, Rock Climb, and Strength once you have all 16 Badges.

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