#089 MukAll 251 Pokémon#091 Cloyster

Gengar’s Pokédex · Kanto · Generation I

#090 Shellder

Water

  • SpeciesBivalve Pokémon
  • Japanese nameShellder
  • PronunciationSHELL-DER
  • Height1′ 0″ 0.30 m
  • Weight9.0 lb 4.05 kg
  • Gender♂ 50% · ♀ 50%
Shellder official artwork

PokédexWhere to findType matchupsMovesBreedingStats

Name meaning

Combination of SHELL and SHELTER.

Evolution

  1. ShellderWater StoneCloyster
Shellder in the original Gengar’s Pokédex
Shellder as it appeared in the original Gengar’s Pokédex

Pokédex entries

RedBlue Its hard shell repels any kind of attack. It is vulnerable only when its shell is open.
Yellow The shell can withstand any attack. However, when it is open, the tender body is exposed.
Stadium Its shell is harder than diamond. It hides in sand on the sea floor and catches prey with its soft tongue.
GoldStadium 2 It swims facing backward by opening and closing its two-piece shell. It is surprisingly fast.
Silver Grains of sand trapped in its shells mix with its body fluids to form beautiful pearls.
Crystal Clamping on to an opponent reveals its vulnerable parts, so it uses this move only as a last resort.

Where to find Shellder

Game Where to find it Time Rarity
Blue Fishing (Vermilion City, Seafoam Island, Cinnabar Island, Routes 6, 11, 19, 20, 21) NA Few
Red NA Many
Yellow Fishing (S.S. Anne, Routes 17 & 18) NA Few
Gold Fishing (Cinnabar Island, New Bark Town, Olivine City (Harbor), Pallet Town, Vermilion City, Routes 20, 21, 26, 27, 41) Any Many
Silver Any Many
Crystal Any Many

How to catch

Ground Surf Fishing Forest Tree Mountain Tree Rock Smash Breed Evolve Event BugCatch Game Corner
R/B ✓
Yellow ✓
G/S ✓ ✓
Crystal ✓ ✓

✓ marks how you can get it in each game. Shaded boxes are methods that didn’t exist in that game.

Type matchups

Defence: damage taken from each attack type

  • Normal×1
  • Fire×0.5
  • Water×0.5
  • Electric×2
  • Grass×2
  • Ice×0.5
  • Fighting×1
  • Poison×1
  • Ground×1
  • Flying×1
  • Psychic×1
  • Bug×1
  • Rock×1
  • Ghost×1
  • Dragon×1
  • Dark×1
  • Steel×0.5
  • Gold, Silver & Crystal: 2 weaknesses and 4 resistances out of 17 types. Defence ratio 1 : 2 (50%).
  • Red, Blue & Yellow: 2 weaknesses and 3 resistances out of 15 types. Defence ratio 2 : 3 (~67%).
  • This Pokémon has more weaknesses in GSC than in RBY. So this Pokémon has a better defense ratio in RBY.

Offence: same-type attacks against each type

  • NormalNormal
  • FireGood
  • WaterBad
  • ElectricNormal
  • GrassBad
  • IceNormal
  • FightingNormal
  • PoisonNormal
  • GroundGood
  • FlyingNormal
  • PsychicNormal
  • BugNormal
  • RockGood
  • GhostNormal
  • DragonBad
  • DarkNormal
  • SteelNormal
  • Gold, Silver & Crystal: 3 advantages and 3 disadvantages out of 17 types. Offensive ratio 1:1 (100%).
  • Red, Blue & Yellow: 1 advantage and 1 disadvantage out of 15 types. Offensive ratio 1:1 (100%).

Moves learned by levelling up

R/B/Y G/S/C Move Type Kind
Start Start Tackle Normal Physical
Start Start Withdraw Water Status
18 9 Supersonic Normal Status
30 17 Aurora Beam Ice Special
— 25 Protect Normal Status
39 33 Leer Normal Status
23 41 Clamp Water Special
50 49 Ice Beam Ice Special

“Start” means it knows the move from level 1; a dash means it doesn’t learn the move by levelling up in that game.

Move Tutor Crystal

  • Ice Beam

TMs & HMs Gold, Silver & Crystal

  • TM03Curse
  • TM06Toxic
  • TM10Hidden Power
  • TM13Snore
  • TM14Blizzard
  • TM16Icy Wind
  • TM17Protect
  • TM18Rain Dance
  • TM20Endure
  • TM21Frustration
  • TM27Return
  • TM32Double Team
  • TM34Swagger
  • TM35Sleep Talk
  • TM39Swift
  • TM44Rest
  • TM45Attract
  • HM03Surf
  • HM06Whirlpool

TMs & HMs Red, Blue & Yellow

  • TM06Toxic
  • TM09Take Down
  • TM10Double-Edge
  • TM11Bubblebeam
  • TM12Water Gun
  • TM13Ice Beam
  • TM14Blizzard
  • TM20Rage
  • TM30Teleport
  • TM31Mimic
  • TM32Double Team
  • TM33Reflect
  • TM34Bide
  • TM36Self Destruct
  • TM39Swift
  • TM44Rest
  • TM47Explosion
  • TM49Tri Attack
  • TM50Substitute
  • HM03Surf

Breeding Gold, Silver & Crystal

Egg groups Water 3 Pokémon group 10

Compatible Pokémon

Egg moves

Move How to pass it down
Barrier Mate with a male Tentacool/Tentacruel.
Bubblebeam Mate with a male Corsola or Tentacool/Tentacruel.
Rapid Spin Breed a male from Squirtle Family and a female Kabuto/Kabutops, then breed the male offspring with a female Shellder/Cloyster.
Screech Mate with a male Tentacool/Tentacruel.
Take Down Teach RBY TM09 (Take Down) to a Pokémon from Kabuto, Krabby, Omanyte, Shellder, or Tentacool Family and trade it to GSC. If male, mate with a female Shellder/Cloyster.

Stats

Stat Base Range at Lv. 100 G/S/C rank R/B/Y rank
HP 30 233-263 42/4510.60% 39/4210.60%
Attack 65 198-228 24/4940.14% 24/4538.21%
Defense 100 268-298 12/5584.13% 9/4487.46%
Speed 40 148-178 40/4715.87% 37/4213.57%
Special Attack G/S/C 45 158-188 34/4621.19% —
Special Defense G/S/C 25 118-148 40/415.48% —
Special R/B/Y 45 158-188 — 23/2918.41%
Total 305 G/S/C
280 R/B/Y
1123-1303
1005-1155
64/8715.87% 44/6521.19%

Ranges are the lowest and highest the stat can be at level 100. Ranks compare the base stat with every other Pokémon in those games (1 is the highest), with its percentile underneath.

Restored from Gengar’s Online Pokédex v4.2, one of the first Pokédexes on the web, created by Curtis Alumbaugh (Gengar) with Ian Alumbaugh (Haunter) and kept by Pokémon Dungeon. How to read this page · Red, Blue & Yellow moves · The Library