Utility
Balanced
325Low
34Very Slow
DTier

Shellos is technically a pre-evolution of Gastrodon, but it holds its own in formats where Eviolite is allowed. Storm Drain redirects Water moves and boosts its Sp. Atk, adding extra value. Only weak to Electric and Grass.

Nothing fancy in Shellos's spread. It leans mixed with HP out front. And you'll get 1 HP EV per KO for it. Follows a medium-fast 1M XP curve.

Base Stats
325Avg
HP76
C
Attack48
D
Defense48
D
Sp. Atk57
D
Sp. Def62
C
Speed34
F
Total325
Low <60
Avg 60-89
High 90-149
Top 150+
EV YieldDefeating Shellos yields +1 HP
HP+1AtkDefSpASpDSpe
Details
Catch190Easy•Medium Fast1M XP•0.3m / 1'00"•6.3kg / 13.9 lbs•65Base XP
Pokedex Entries

Beware of pushing strongly on its squishy body, as it makes a mysterious purple fluid ooze out.

Black / White

Shellos Weakness

Good

Type-wise, Shellos takes extra damage from Electric and Grass. The Water typing picks up 4 resistances to work with. Storm Drain grants an additional Water immunity, reshaping the matchup chart.

Gen V Type Chart
  • Fairy type does not exist — Dragon has fewer checks
  • Physical / Special split now per-move (introduced Gen IV)
4xCriticali
None
2xWeaki
ElectricGrass
½xResisti
FireWaterIceSteel
¼xResisti
None
0xImmunei
Water
STAB (3)i
FireGroundRock
2Weak
4Resist
1Immune
Scorei0
SpikesGrounded — up to 25%
Toxic SpikesVulnerable
Abilities
Sticky HoldPrevents a held item from being removed by other Pokémon.
Storm DrainRedirects single-target water moves to this Pokémon where possible. Absorbs Water moves, raising Special Attack one stage.
Sand ForceHAStrengthens rock, ground, and steel moves to 1.3× their power during a sandstorm. Protects against sandstorm damage.
Storm Drain grants Water immunity

Shellos is the base form in a two-stage line leading to Gastrodon. Check the evolution method below. A decent partner pool for breeding via two egg groups. Eggs are average hatch time. Evolving adds up to 150 stat points total.

How to Evolve

2 Forms
Shellos
#422Shellos
30
Level 30
Gastrodon
#423Gastrodon
Stat Comparison 2 Stages
Shellos
Water
Gastrodon
WaterGround
HP
76
111+35
ATK
48
83+35
DEF
48
68+20
SP.ATK
57
92+35
SP.DEF
62
82+20
SPE
34
39+5
BST
325C-Tier
475B-Tier+150
ROLE
Balanced
Trick Room
TYPE
Utility
Mixed
Breeding
Very Easy

Breed Shellos easily with 45 breeding partners from the Indeterminate and Water1 egg groups. Pass egg moves like Amnesia, Brine, Clear Smog and 12 more to offspring.

Egg Groups
IndeterminateWater1
Gender
♂50.0%♀50.0%
Hatch Time
20 cycles·5,140 steps
Quick~5 min with Flame Body
Egg Moves
15moves
Breed With (best first)
azumarillgardevoirgalladeblastoisegolduckferaligatrkingdraswampertslowbroslowkingoctilleryludicolo
12 of 45·

Best Build

No build content available for this Pokemon in Gen 5.

Try selecting a different game/generation filter, or check back later.

Breeding's the move. Amnesia and Brine give Shellos options it can't learn any other way, and coverage across 7 types already covers a decent range on top of Muddy Water and Surf. The egg moves push it further.

Level-Up Moves

Lv 1
Mud-Slap
2010010Ground
Lv 2
Mud Sport
——15Ground
Lv 4
Harden
——30Normal
Lv 7
Water Pulse
6010020Water
Lv 11
Mud Bomb
658510Ground
Lv 16
Hidden Power
6010015Normal
Lv 22
Rain Dance
——5Water
Lv 29
Body Slam
8510015Normal
Lv 37
Muddy Water
958510Water
Lv 46
Recover
——10Normal

TM Moves

Src
TM45
Attract
—10015Normal
TM14
Blizzard
120705Ice
HM06
Dive
8010010Water
TM32
Double Team
——15Normal
TM42
Facade
7010020Normal
TM21
Frustration
—10020Normal
TM07
Hail
——10Ice
TM10
Hidden Power
6010015Normal
TM13
Ice Beam
9510010Ice
TM17
Protect+4
——10Normal
TM18
Rain Dance
——5Water
TM44
Rest
——10Psychic
TM27
Return
—10020Normal
TM48
Round
6010015Normal
TM55
Scald
8010015Water
TM90
Substitute
——10Normal
HM03
Surf
9510015Water
TM87
Swagger
—9015Normal
TM06
Toxic
—9010Poison

Egg Moves

Src
Egg
Amnesia
——20Psychic
Egg
Brine
6510010Water
Egg
Clear Smog
50—15Poison
Egg
Counter-5
—10020Fighting
Egg
Curse
——10Ghost
Egg
Fissure
—305Ground
Egg
Memento
—10010Dark
Egg
Mirror Coat-5
—10020Psychic
Egg
Mist
——30Ice
Egg
Sludge
6510020Poison
Egg
Spit Up
—10010Normal
Egg
Stockpile
——20Normal
Egg
Swallow
——10Normal
Egg
Trump Card
——5Normal
Egg
Yawn
——10Normal

Tutor Moves

Shellos can't learn any Tutor moves

Transfer Moves

Src
Gen 4
Ancient Power
601005Rock
Gen 4
Captivate
—10020Normal
Gen 4
Endure+4
——10Normal
Gen 4
Headbutt
7010015Normal
Gen 4
Natural Gift
—10015Normal
Gen 4
Secret Power
7010020Normal
Gen 4
String Shot
—9540Bug
Gen 4
Whirlpool
358515Water

Shellos can't be caught in Black & White. Bring it over from Diamond, Platinum, or Sword instead. The encounter info below covers the source games.

Shellos is not available as a wild encounter in this game.

Also found in:

DiamondPlatinumOmega RubyUltra SunSword

  • At 325 BST, Shellos is firmly in pre-evolution territory. Evolve it into Gastrodon before bringing it to any serious fight.

  • Shellos's biggest threats include Manectric (Electric) and Roserade (Grass), all carrying super-effective STAB moves. Only 2 weaknesses means fewer dedicated counters to worry about. At base 34 Speed, Shellos won't outrun any of these threats so switching to a resist is usually the safer play.

  • Shellos evolves into Gastrodon at level 30. Shellos is the base form of this evolutionary line.

  • Shellos gets Storm Drain, Sticky Hold, and Sand Force. But Storm Drain is the one that matters — it's the centerpiece of every viable set. Build around that.

  • Shellos is leaning toward the special side (base 57 Sp. Atk). But the speed tells the real story — base 34 Speed is low. Priority moves or Trick Room are the way to go.

  • Shellos appears in 13 games, including Platinum, HeartGold & SoulSilver, and Diamond & Pearl.

Debuting in Diamond & Pearl, Shellos appears in 13 games across 6 generations. A reliable presence in a solid number of games, typically found through catching or hatching as a base form.