One Island Map
The One Island map, plus 5 places you can go inside.
Pokémon in One Island
Wild encounters in Pokémon FireRed, with rates and levels.
Surfing
 | Tentacool | Lv.5–40 | 95% |
 | Tentacruel | Lv.35–40 | 5% |
Old Rod
 | Magikarp | Lv.5 | 100% |
Good Rod
 | Horsea | Lv.5–15 | 80% |
| Magikarp | Lv.5–15 | 20% |
Super Rod
| Horsea | Lv.15–25 | 40% |
 | Shellder | Lv.15–25 | 40% |
 | Gyarados | Lv.15–25 | 15% |
 | Seadra | Lv.25–35 | 4% |
 | Psyduck | Lv.25–35 | 1% |
Where is One Island in Pokémon FireRed?
Every way in and out of this location.
In Pokémon FireRed, One Island is reached from Kindle Road and Treasure Beach.
How to get through One Island
One Island leads to 2 other places across 5 floors.
Walkthrough
One Island is stop 45 of 85 following the connections outward from Pallet Town. It is a route through the map, not the story order.