The way through the Seafoam Island caves is full of twists and turns, and you'll have to puzzle your way through to reach the south side of the island. This complex labyrinth of caves hides one of the most powerful allies you can find: the Legendary Pokemon Articuno!
You can't get through Seafoam Island unless you have a Pokémon that knows Strength. After you enter the cave, go east and push the boulder into the hole to the north. Now go to the steps north of the entrance and go up. Grab the Ice Heal. Within this cave you'll get your first chance to find a Seel, and more rarely, its evolution Dewgong.
More importantly, the legendary Pokémon Articuno resides in the depths of these caves. The two boulders on the first floor block the current on the third basement level, which makes it easier to get around, but is not necessary for catching Articuno. It's the two in the third basement that are important: knock the other boulders out of the way so you can get to the ones in line with the holes (if you mess up, leave this floor and they'll reset), then jump in after them, swim to the island in the northwest, and you'll find Articuno.
Save your game before you face it. You should bring a lot of Ultra Balls, and remember to use techniques that inflict paralysis or sleep to make the capture more certain.
Floor 1
File:FRLG Seafoam Islands 1F.png
Pokémon found
| FireRed | Level | Encounter Rate | LeafGreen | Level | Encounter Rate |
|---|---|---|---|---|---|
 Zubat
|
22-26 | 34% | Zubat
|
22-26 | 34% |
 Golbat
|
26-30 | 11% | Golbat
|
26-30 | 11% |
 Psyduck
|
26-33 | 50% |  Slowpoke
|
26-33 | 50% |
Floor B1
File:FRLG Seafoam Islands B1F.png
Pokémon found
| FireRed | Level | Encounter Rate | LeafGreen | Level | Encounter Rate |
|---|---|---|---|---|---|
 Seel
|
28 | 10% | Seel
|
28 | 10% |
| Zubat
|
22-26 | 34% | Zubat
|
22-26 | 34% |
| Golbat
|
26-30 | 11% | Golbat
|
26-30 | 11% |
| Psyduck
|
29-31 | 40% | Slowpoke
|
29-31 | 40% |
 Golduck
|
33-35 | 5% |  Slowbro
|
33-35 | 5% |
Floor B2
File:FRLG Seafoam Islands B2F.png
Pokémon found
| FireRed | Level | Encounter Rate | LeafGreen | Level | Encounter Rate |
|---|---|---|---|---|---|
| Seel
|
30-32 | 20% | Seel
|
30-32 | 20% |
| Zubat
|
22-24 | 20% | Zubat
|
22-24 | 20% |
| Golbat
|
26-30 | 10% | Golbat
|
26-30 | 10% |
| Psyduck
|
30-32 | 40% | Slowpoke
|
30-32 | 40% |
| Golduck
|
32-34 | 10% | Slowbro
|
32-34 | 10% |
Floor B3
File:FRLG Seafoam Islands B3F.png
Pokémon found
| FireRed | Level | Encounter Rate | LeafGreen | Level | Encounter Rate |
|---|---|---|---|---|---|
| Seel
|
30-32 | 40% | Seel
|
30-32 | 40% |
| Zubat
|
24 | 10% | Zubat
|
24 | 10% |
| Golbat
|
26-30 | 10% | Golbat
|
26-30 | 10% |
| Psyduck
|
30-32 | 20% | Slowpoke
|
30-32 | 20% |
| Golduck
|
30-32 | 15% | Slowbro
|
30-32 | 15% |
 Dewgong
|
32-34 | 5% | Dewgong
|
32-34 | 5% |
| Surfing | |||||
| Seel
|
25-35 | 60% | Seel
|
25-35 | 60% |
 Horsea
|
25-30 | 30% |  Krabby
|
25-30 | 30% |
| Psyduck
|
30-40 | 4% | Slowpoke
|
30-40 | 4% |
| Golduck
|
35-40 | 1% | Slowbro
|
35-40 | 1% |
| Dewgong
|
35-40 | 5% | Dewgong
|
35-40 | 5% |
| Old Rod | |||||
 Magikarp
|
5 | 100% | Magikarp
|
5 | 100% |
| Good Rod | |||||
| Horsea
|
5-15 | 60% | Horsea
|
5-15 | 20% |
| Krabby
|
5-15 | 20% | Krabby
|
5-15 | 60% |
| Magikarp
|
5-15 | 20% | Magikarp
|
5-15 | 20% |
| Super Rod | |||||
| Horsea
|
15-30 | 80% | Krabby
|
15-30 | 80% |
 Gyarados
|
15-35 | 16% | Gyarados
|
15-35 | 16% |
| Psyduck
|
15-25 | 4% | Slowpoke
|
15-25 | 4% |
Floor B4
File:FRLG Seafoam Islands B4F.png
Pokémon found
| FireRed | Level | Encounter Rate | LeafGreen | Level | Encounter Rate |
|---|---|---|---|---|---|
| Seel
|
30-34 | 50% | Seel
|
30-34 | 50% |
| Golbat
|
26-30 | 15% | Golbat
|
26-30 | 15% |
| Psyduck
|
32 | 10% | Slowpoke
|
32 | 10% |
| Golduck
|
32-34 | 15% | Slowbro
|
32-34 | 15% |
| Dewgong
|
34-36 | 10% | Dewgong
|
34-36 | 10% |
| Surfing | |||||
| Seel
|
25-35 | 60% | Seel
|
25-35 | 60% |
| Horsea
|
25-30 | 30% | Krabby
|
25-30 | 30% |
| Psyduck
|
30-40 | 4% | Slowpoke
|
30-40 | 4% |
| Golduck
|
35-40 | 1% | Slowbro
|
35-40 | 1% |
| Dewgong
|
35-40 | 5% | Dewgong
|
35-40 | 5% |
| Old Rod | |||||
| Magikarp
|
5 | 100% | Magikarp
|
5 | 100% |
| Good Rod | |||||
| Horsea
|
5-15 | 60% | Horsea
|
5-15 | 20% |
| Krabby
|
5-15 | 20% | Krabby
|
5-15 | 60% |
| Magikarp
|
5-15 | 20% | Magikarp
|
5-15 | 20% |
| Super Rod | |||||
| Horsea
|
15-30 | 80% | Krabby
|
15-30 | 80% |
| Gyarados
|
15-35 | 16% | Gyarados
|
15-35 | 16% |
| Psyduck
|
15-25 | 4% | Slowpoke
|
15-25 | 4% |
| Special Pokémon | |||||
 Articuno
|
50 | Only One | Articuno
|
50 | Only One |
New Pokemon
| #086 Seel |
|---|
Seel is not a bad choice to fill a spot in your team, Water and Ice being two almost essential types for your future fight against the Elite Four. It's just that there are simply more powerful and versatile Pokemon you can choose instead, such as Lapras or Cloyster. Seel is simply just not powerful enough and so it is best left in your PC. |
| #144 Articuno |
|---|
Articuno sports the best stats of the Legendary birds, and will be a welcome addition if you don't have an Ice and/or Flying Pokemon in your team. However, remember that its dual type makes Articuno extremely weak against any Rock attacks. |
Items
- 1F: Ice Heal (Near the northwest ladder)
- B1F: Revive (On the center platform)
- B1F: Water Stone (South-central area, accessed from B2F)
- B2F: Big Pearl (South of the central platform)
- B3F: Nugget (On a rock, on the western platform (hidden))
- B4F: Water Stone (On a rock, near the western ladder (hidden))
- B4F: Ultra Ball (East of the southern sign)