Walkthrough
Located within Route 20 is the icy caverns known as Seafoam Islands. These caves are home to loads of Water Type Pokemon, the same that will be useful to have when facing the Cinnabar Island Gym. However, the main attraction to the Seafoam Islands is that they are home to another Legendary Pokemon!
Wild Pokemon
1st Floor - Walking:
Psyduck(FireRed)/Slowpoke(LeafGreen) (55%): Levels 26-33
Zubat (34%): Levels 22-26
Golbat (11%): Levels 26-30
Basement Floor 1 - Walking:
Psyduck(FireRed)/Slowpoke(LeafGreen) (40%): Levels 29-31
Zubat (34%): Levels 22-26
Golbat (11%): Levels 26-30
Seel (10%): Level 28
Golduck(FireRed)/Slowbro(LeafGreen) (5%): Levels 33-35
Basement Floor 2 - Walking:
Psyduck(FireRed)/Slowpoke(LeafGreen) (40%): Levels 30-32
Zubat (20%): Levels 22-24
Seel (20%): Levels 30-32
Golbat (10%): Levels 26-30
Golduck(FireRed)/Slowbro(LeafGreen) (10%): Levels 32-34
Basement Floor 3 - Walking:
Seel (40%): Levels 30-32
Psyduck(FireRed)/Slowpoke(LeafGreen) (20%): Levels 30-32
Golduck(FireRed)/Slowbro(LeafGreen) (15%): Levels 32-34
Zubat (20%): Level 24
Golbat (10%): Levels 26-30
Dewgong (5%): Levels 32-34
Basement Floor 3 - Surfing:
Seel (60%): Levels 25-35
Horsea(FireRed)/Krabby(LeafGreen) (30%): Levels 25-30
Dewgong (5%): Levels 35-40
Psyduck(FireRed)/Slowpoke(LeafGreen) (4%): Levels 30-40
Golduck(FireRed)/Slowbro(LeafGreen) (1%): Levels 35-40
Basement Floor 3 - Old Rod:
Magikarp (100%): Level 5
Basement Floor 3 - Good Rod:
Horsea(FireRed)/Krabby(LeafGreen) (60%): Levels 5-15
Krabby(FireRed)/Horsea(LeafGreen) (20%): Levels 5-15
Magikarp (20%): Levels 5-15
Basement Floor 3 - Super Rod:
Horsea(FireRed)/Krabby(LeafGreen) (84%): Levels 15-35
Gyarados (15%): Levels 15-25
Psyduck(FireRed)/Slowpoke(LeafGreen) (1%): Levels 25-35
Basement Floor 4 - Walking:
Seel (50%): Levels 30-34
Golbat (15%): Levels 26-30
Golduck(FireRed)/Slowbro(LeafGreen) (15%): Levels 32-34
Psyduck(FireRed)/Slowpoke(LeafGreen) (10%): Level 32
Dewgong (10%): Levels 34-36
Basement Floor 4 - Surfing:
Seel (60%): Levels 25-35
Horsea(FireRed)/Krabby(LeafGreen) (30%): Levels 25-30
Dewgong (5%): Levels 35-40
Psyduck(FireRed)/Slowpoke(LeafGreen) (4%): Levels 30-40
Golduck(FireRed)/Slowbro(LeafGreen) (1%): Levels 35-40
Basement Floor 4 - Old Rod:
Magikarp (100%): Level 5
Basement Floor 4 - Good Rod:
Horsea(FireRed)/Krabby(LeafGreen) (60%): Levels 5-15
Krabby(FireRed)/Horsea(LeafGreen) (20%): Levels 5-15
Magikarp (20%): Levels 5-15
Basement Floor 4 - Super Rod:
Horsea(FireRed)/Krabby(LeafGreen) (84%): Levels 15-35
Gyarados (15%): Levels 15-25
Psyduck(FireRed)/Slowpoke(LeafGreen) (1%): Levels 25-35
Items
1st Floor:
Ice Heal: On Ground
Basement Floor 1:
Revive: On Ground
Water Stone: On Ground
Basement Floor 2:
Big Pearl: On Ground
Basement Floor 3:
Nugget: ItemFinder
Basement Floor 4:
Ultra Ball: On Ground
Water Stone: ItemFinder