Shellder in FireRed.
Shellder is a FireRed exclusive: it appears in 7 places there and nowhere in LeafGreen. The best odds are Cinnabar Island (super rod, 40% at level 15-25).
Where to find Shellder
odds are the game's slot tables| Area | How | Level | Odds |
|---|---|---|---|
| Cinnabar IslandCinnabarIsland | Super Rod (FireRed only) | 15-25 | 40% |
| Five Island | Super Rod (FireRed only) | 15-25 | 40% |
| Icefall CaveIcefallCave Back | Super Rod (FireRed only) | 15-25 | 40% |
| One IslandOneIsland | Super Rod (FireRed only) | 15-25 | 40% |
| Pallet TownPalletTown | Super Rod (FireRed only) | 15-25 | 40% |
| S.S. AnneExterior | Super Rod (FireRed only) | 15-25 | 40% |
| Vermilion CityVermilionCity | Super Rod (FireRed only) | 15-25 | 40% |
Evolution
2 stages
Shellder
CloysterEvolves into Cloyster with a Water Stone.
Evolve now or wait
from the game's learnsets and the relearner ruleShellder evolves whenever you use the Water Stone; the comparison below assumes you do it at level 15, the level you first meet it. Evolving then forfeits 3 moves that Shellder would still learn: Leer at 36, Clamp at 43, Ice Beam at 50. Cloyster learns 2 moves of its own after that: Spikes at 36, Spike Cannon at 43.
| Move you would forfeit | Level | Can you get it back? |
|---|---|---|
| Leer | 36 | No. The Move Relearner only teaches moves from the current form's own level-up list, so once it is Cloyster this move is gone. |
| Clamp | 43 | No. The Move Relearner only teaches moves from the current form's own level-up list, so once it is Cloyster this move is gone. |
| Ice Beam | 50 | Yes: TM13 Ice Beam teaches Cloyster. |
Rule the game applies: the Move Relearner on Two Island (he takes two Tiny Mushrooms or one Big Mushroom) teaches only the level-up moves of the form you hand him, at or below its current level. Delaying an evolution costs the evolved form's higher base stats for every level you wait; a move you barely use is not worth that.
Shellder learnset in FireRed
9 level-up moves · 17 machinesBy level
Cloyster by level
TMs and HMs it can learn (17)
HM03 Surf, HM08 Dive, TM03 Water Pulse, TM06 Toxic, TM07 Hail, TM10 Hidden Power, TM13 Ice Beam, TM14 Blizzard, TM17 Protect, TM18 Rain Dance, TM21 Frustration, TM27 Return, TM32 Double Team, TM42 Facade, TM43 Secret Power, TM44 Rest, TM45 Attract