One Island

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One Island

Access to:
East: Kindle Road
South: Treasure Beach
Accessible from the city (via the Seagallop Ferries): Vermilion City, Two Island, Three Isle Port, Four Island, Five Island, Six Island, and Seven Island

Places of interest:
Pokémon Network Center: After restoring the Network Machine by delivering the Ruby and Sapphire, the player can use this Pokémon Center to connect to Ruby, Sapphire, Emerald, Colosseum, and XD.

Utility:
Surf is required to travel to Treasure Beach in the south. Wild Pokémon can also be encountered here with Surf.

Choose display option for Pokémon tables:

FireRed (Full)

FireRed (Compressed)

LeafGreen (Full)

LeafGreen (Compressed)

Combined (Full)

Separate (Full)

Combined (Compressed)

Separate (Compressed)

Pokémon

Wild Shellder have a 50% chance of holding a Pearl and a 5% chance of holding a Big Pearl.
Wild Staryu have a 50% chance of holding Stardust and a 5% chance of holding a Star Piece.

Surfing

Combined (Full)
Slot	Rate	FireRed			LeafGreen
0	60%		Tentacool	lv. 5-20		Tentacool	lv. 5-20
1	30%		Tentacool	lv. 20-35		Tentacool	lv. 20-35
2	5%		Tentacool	lv. 35-40		Tentacool	lv. 35-40
3	4%		Tentacruel	lv. 35-40		Tentacruel	lv. 35-40
4	1%		Tentacruel	lv. 35-40		Tentacruel	lv. 35-40

Combined (Compressed)
Pokémon		FireRed		LeafGreen
	Tentacool	95%	lv. 5-40	95%	lv. 5-40
	Tentacruel	5%	lv. 35-40	5%	lv. 35-40

Fishing

FireRed (Full)
Slot	Rate	Rod	Pokémon		Level
0	70%	Old		Magikarp	5
1	30%	Old		Magikarp	5
0	60%	Good		Horsea	5-15
1	20%	Good		Magikarp	5-15
2	20%	Good		Horsea	5-15
0	40%	Super		Horsea	15-25
1	40%	Super		Shellder	15-25
2	15%	Super		Gyarados	15-25
3	4%	Super		Seadra	25-35
4	1%	Super		Psyduck	25-35

LeafGreen (Full)
Slot	Rate	Rod	Pokémon		Level
0	70%	Old		Magikarp	5
1	30%	Old		Magikarp	5
0	60%	Good		Krabby	5-15
1	20%	Good		Magikarp	5-15
2	20%	Good		Krabby	5-15
0	40%	Super		Krabby	15-25
1	40%	Super		Staryu	15-25
2	15%	Super		Gyarados	15-25
3	4%	Super		Kingler	25-35
4	1%	Super		Slowpoke	25-35

Combined (Full)
Slot	Rate	Rod	FireRed			LeafGreen
0	70%	Old		Magikarp	lv. 5		Magikarp	lv. 5
1	30%	Old		Magikarp	lv. 5		Magikarp	lv. 5
0	60%	Good		Horsea	lv. 5-15		Krabby	lv. 5-15
1	20%	Good		Magikarp	lv. 5-15		Magikarp	lv. 5-15
2	20%	Good		Horsea	lv. 5-15		Krabby	lv. 5-15
0	40%	Super		Horsea	lv. 15-25		Krabby	lv. 15-25
1	40%	Super		Shellder	lv. 15-25		Staryu	lv. 15-25
2	15%	Super		Gyarados	lv. 15-25		Gyarados	lv. 15-25
3	4%	Super		Seadra	lv. 25-35		Kingler	lv. 25-35
4	1%	Super		Psyduck	lv. 25-35		Slowpoke	lv. 25-35

FireRed (Compressed)
Rod	Pokémon		Rate	Level
Old		Magikarp	100%	5
Good		Horsea	80%	5-15
Good		Magikarp	20%	5-15
Super		Horsea	40%	15-25
Super		Shellder	40%	15-25
Super		Gyarados	15%	15-25
Super		Seadra	4%	25-35
Super		Psyduck	1%	25-35

LeafGreen (Compressed)
Rod	Pokémon		Rate	Level
Old		Magikarp	100%	5
Good		Krabby	80%	5-15
Good		Magikarp	20%	5-15
Super		Krabby	40%	15-25
Super		Staryu	40%	15-25
Super		Gyarados	15%	15-25
Super		Kingler	4%	25-35
Super		Slowpoke	1%	25-35

Combined (Compressed)
Rod	Pokémon		FireRed		LeafGreen
Old		Magikarp	100%	lv. 5	100%	lv. 5
Good		Magikarp	20%	lv. 5-15	20%	lv. 5-15
Good		Horsea	80%	lv. 5-15	N/A
Good		Krabby	N/A		80%	lv. 5-15
Super		Gyarados	15%	lv. 15-25	15%	lv. 15-25
Super		Horsea	40%	lv. 15-25	N/A
Super		Shellder	40%	lv. 15-25	N/A
Super		Seadra	4%	lv. 25-35	N/A
Super		Psyduck	1%	lv. 25-35	N/A
Super		Krabby	N/A		40%	lv. 15-25
Super		Staryu	N/A		40%	lv. 15-25
Super		Kingler	N/A		4%	lv. 25-35
Super		Slowpoke	N/A		1%	lv. 25-35

Items

FireRed and LeafGreen Items
Item	Games		Location	Notes
Meteorite	FR	LG	Obtained from Bill the first time the player visits the area
Tri-Pass	FR	LG	Obtained from Celio the first time the player visits the area	The Tri-Pass allows the player to visit Two and Three Islands.
Town Map	FR	LG	Obtained from Celio the first time the player visits the area	Only if the player did not receive it from Daisy in Pallet Town.
Rainbow Pass	FR	LG	Obtained from Celio in exchange for the Ruby	The Rainbow Pass allows the player to visit Four, Five, Six, and Seven Islands.