Cinnabar Island, Icefall Cave (Rear), One Island, Pallet Town, and Vermilion Harbour. You need to fish with a Super Rod
You wil have to trade with FireRed or XD.
No, you have to trade it from FireRed or Pokémon XD: Gale of Darkness
Use a good rod in seafoam islands.
Poliwhirl → Poliwrath, Shellder → Cloyster, Staryu → Starmie and Eevee → Vaporeon
To get Pokemon firered on PC download a vba and Pokemon firered ROM
You can catch shellder in Pokemon red, blue, yellow, gold, silver, crystal, FireRed, XD, diamond, and pearl.
a piece of cheese
you can't get a shellder in leafgreen, you can only get it in firered. you can ask a friend that has that game to catch you a shellder and trade it to you.
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Cloyster can only be obtained through evolving Shellder. Shellder is a FireRed-exclusive Pokemon in Generation III.
You wil have to trade with FireRed or XD.
Shellder can be found in firered and leafgreen either you fish for one or look in seafoam islands.
I know firered can, if you seen a shellder look at it on your pokedex and check its area if it says unkown you will HAVE to trade a shellder to leafgreen from firered.
No, you have to trade it from FireRed or Pokémon XD: Gale of Darkness
Use a good rod in seafoam islands.
You could catch a Shellder at Valley Windworks only by using your super rod
find a shellder in the water of pallet town then give it a water stone