Cerulean Cave

Grass

Pokémon	When	Level	Chance
Golbat	Any time	38–47	50%
Parasect	Any time	38–47	25%
Machoke	Any time	39–45	24%
Kadabra	Any time	42–46	20%
Magneton	Any time	39–47	15%
Primeape	Any time	38–39	14%
Ditto	Any time	39–45	11%
Electrode	Any time	40–46	5%
Wobbuffet	Any time	37–49	5%

Surfing

Pokémon	When	Level	Chance
Psyduck	Any time	35–40	90%
Golduck	Any time	40	10%

Rock Smash

Pokémon	When	Level	Chance
Geodude	Any time	22–24	90%
Graveler	Any time	26–30	10%

Old Rod

Pokémon	When	Level	Chance
Magikarp	Any time	10	100%

Good Rod

Pokémon	When	Level	Chance
Goldeen	Any time	20	44%
Poliwag	Any time	20	41%
Magikarp	Any time	20	15%

Super Rod

Pokémon	When	Level	Chance
Poliwag	Any time	40	40%
Poliwhirl	Any time	40	40%
Gyarados	Any time	40	20%

Items

Max ElixirNuggetFull RestoreSea IncenseBig Pearl · hiddenStardust · hiddenPearl · hiddenPP UpTM24Ultra BallOdd IncenseUltra Ball · hiddenFull Restore · hiddenRare Candy · hiddenMax Potion · hiddenElixir · hiddenBig Pearl · hiddenMax ReviveUltra BallDusk StoneElectirizerBlack SludgeMax Potion · hiddenRevive · hiddenCarbos · hidden