Gastrodon (Pokémon)

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For Pokémon GO information on this species, see the game's section.
0422MS.png #0422: Shellos
Pokémon
#0424: Ambipom 0424MS.png
This article is about the species. For a specific instance of this species, see Gastrodon (disambiguation).
Gastrodon
Sea Slug Pokémon
トリトドン
Tritodon
#0423
Gastrodon



Images on the Bulbagarden Archives
Type
Water Ground
Unknown Unknown
Unknown Unknown
Unknown Unknown
Unknown Unknown
Unknown Unknown
Abilities
Sticky Hold or Storm Drain Cacophony
Cacophony
Sand Force
Hidden Ability
Cacophony
Hidden Ability
Cacophony
Cacophony
Gender ratio
Unknown
50% male, 50% female
Catch rate
75 (17.5%)
Breeding
Egg Groups
Water 1 and Amorphous
Hatch time
20 cycles
Height
2'11" 0.9 m
Gastrodon
0'0" 0 m
{{{form2}}}
0'0" 0 m
{{{form3}}}
0'0" 0 m
{{{form4}}}
Weight
65.9 lbs. 29.9 kg
Gastrodon
0 lbs. 0 kg
{{{form2}}}
0 lbs. 0 kg
{{{form3}}}
0 lbs. 0 kg
{{{form4}}}
Mega Stone
[[|]] [[|]]
Base experience yield
176
Gen. IV
Unknown
IV
166
V+
Leveling rate
Medium Fast
EV yield
Total: 2
Gastrodon
2
HP
0
Atk
0
Def
0
Sp.Atk
0
Sp.Def
0
Speed
0
HP
0
Atk
0
Def
0
Sp.Atk
0
Sp.Def
0
Speed
0
HP
0
Atk
0
Def
0
Sp.Atk
0
Sp.Def
0
Speed
0
HP
0
Atk
0
Def
0
Sp.Atk
0
Sp.Def
0
Speed
Shape
Body02.png
Footprint
F0423.png F000.png
{{{form2}}}
Pokédex color
Purple
Other forms may have other colors.
Base friendship
70
External Links

Gastrodon (Japanese: トリトドン Tritodon) is a dual-type Water/Ground Pokémon introduced in Generation IV.

It evolves from Shellos starting at level 30.

Gastrodon has two different forms: West Sea Gastrodon, which is pink and brown in appearance, and East Sea Gastrodon, which is blue and green. They are found on the respective sides of Sinnoh's mountain range.

Biology

Gastrodon is a sea slug-like Pokémon. Much like its pre-evolved form, it has a slug-like body with a round head and a mantle covering the top half of its body. It has six stubby legs and two black eyes with white pupils, with a mark imitating a third eye appearing on its forehead. A yellow stripe runs along the edge of its mantle, through its two lower eyes, and around the back of its head. Like Shellos, Gastrodon has two forms based on the sea it lives in.

In its West Sea form, it has a pair of large tentacles on its head that curve upward and a smaller, straighter pair on its neck. Its underside is pink, while its mantle is brown, with three pink spots on each side of its back. There are also two lumps on its back, resembling the cerata on real-life sea slugs.

In its East Sea form, it retains the head tentacles it had as a Shellos, which are now fully green and angled slightly further upward. Its underside is turquoise, while its mantle is forest green with two turquoise spots on each side. It has a pair of yellow, fin-like cerata on its back and a wavy yellow line bordering its side and rear.

Gastrodon and its pre-evolution Shellos are examples of allopatric speciation, although the two forms can still breed with each other. It is also a relative of Shellder and Cloyster. When threatened, it oozes a purple liquid and flees. While not poisonous, the fluid is very bitter and sticky. Its mucus-coated body is soft and squishy yet surprisingly resilient, and it leaves behind a trail of sticky slime when moving on land. It also has strong regenerative capabilities that allow it to recover from injuries or dismemberment within a few hours. In ancient times, it had a shell on its back, which gradually became a thin yet hard vestigial plate.

Gastrodon lives in shallow tidal pools, beaches, and rocky shorelines. Its diet consists mainly of plankton, but it is occasionally known to move onto land to look for other foods, such as beach sand. When it finds prey, it melts it with mucus before eating them. While Gastrodon cannot stay out of water for too long due to its body being highly vulnerable to dehydration, it becomes more active during cloudy or rainy weather. It has been found on far-off mountains during times of constant rain. The two forms of Gastrodon are known to engage in heated conflict with one another. West Sea Gastrodon was much more numerous in the past than it is in the present. Conversely, East Sea Gastrodon's population has visibly increased in population as of late.

Forms

Gastrodon has two separate forms: West Sea Gastrodon and East Sea Gastrodon. The two forms differ in appearance only.

West Sea
0423Gastrodon-West.png
East Sea
0423Gastrodon-East.png

Evolution

Gastrodon evolves from Shellos.

West Sea

0422Shellos-West.png
Unevolved
Shellos
West Sea
 Water 

0423Gastrodon-West.png
First evolution
Gastrodon
West Sea
 Water  Ground 

East Sea

0422Shellos-East.png
Unevolved
Shellos
East Sea
 Water 

0423Gastrodon-East.png
First evolution
Gastrodon
East Sea
 Water  Ground 

In the anime

West Sea Gastrodon in the anime
East Sea Gastrodon in the anime

Major appearances

Zoey's Gastrodon

In Last Call — First Round!, Zoey's West Sea Shellos was revealed to have evolved into a Gastrodon. It was used alongside Lumineon in the Performance Stage of the Sinnoh Grand Festival. Gastrodon was later used in the Contest Battles as well, winning them and assuring Zoey would make her way to the finals.

Other

West Sea Gastrodon debuted in Double Team Turnover!, under the ownership of Cynthia. In Aiding the Enemy, it battled Aaron's Beautifly on television. It was able to defeat Beautifly in addition to Aaron's Drapion, giving Cynthia the win. It reappeared in Pride of a Champion!, The Fiery Road to Mastership!, and Bewitch, Battle, and Bewilder! when Cynthia used it in her Masters Eight Tournament matches against Iris and Ash.

East Sea Gastrodon debuted in Familiarity Breeds Strategy!, under the ownership of Paul. It battled Ash's Staraptor and Buizel in their Lily of the Valley Conference match, losing against the latter.

Minor appearances

In Old Rivals, New Tricks!, a Coordinator's West Sea Gastrodon competed in the Sandalstraw Contest.

Two Gastrodon, one East Sea and one West Sea, appeared in Chasing Memories, Creating Dreams!, under the ownership of different Trainers. They watched Professor Kukui's announcement of the Manalo Stadium's completion.

Two Trainers' East Sea Gastrodon appeared in The Gates of Warp!, with one of them appearing in a flashback.

A Trainer's East Sea Gastrodon appeared in Showdown at the Gates of Warp!.

Pokédex entries

Episode Pokémon Source Entry
DP097 Gastrodon
(West Sea)
Dawn's Pokédex Gastrodon, the Sea Slug Pokémon and the evolved form of Shellos. Gastrodon inhabits the shallow tidal pools of the ocean, and its sturdy shell serves to protect its body.
DP186 Gastrodon
(East Sea)
Dawn's Pokédex Gastrodon, the Sea Slug Pokémon and the evolved form of Shellos. A sturdy shell covered Gastrodon's back long ago. Its cells still contain evidence of it today.
Episode Pokémon Source Entry
JN117 Gastrodon
(West Sea)
Goh's Rotom Phone Gastrodon, the Sea Slug Pokémon. A Water and Ground type. Although Gastrodon has a flexible body, it is tough, allowing it to absorb sharp blows.

In the manga

West Sea Gastrodon in Pokémon Adventures
East Sea Gastrodon in Pokémon Adventures

Pokémon Adventures

A East Sea Gastrodon first appeared in Knowledge of the Unown I, under the ownership of a Pa.

Jupiter owns a West Sea Gastrodon, which debuted in Stopping Sableye. It was first used to battle Platinum, Maylene, and Candice at Lake Acuity.

In The Final Dimensional Duel V, a West Sea Gastrodon appeared in a flashback on Fullmoon Island as one of the Pokémon affected by Darkrai's Bad Dreams. It was rescued and healed by Palmer.

Hapu owns an East Sea Gastrodon, which first appeared in Battle in Vast Poni Canyon.

An East Sea Gastrodon appeared in Swaying!! Murky Memories.

In the TCG

Main article: Gastrodon (TCG)

Game data

Pokédex entries

This Pokémon was unavailable prior to Generation IV.
Generation IV Sinnoh
#061
Johto
#—
Diamond It has a pliable body without any bones. If any part of its body is torn off, it grows right back.
Pearl It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.
Platinum Long ago, its entire back was shielded with a sturdy shell. There are traces of it left in its cells.
HeartGold When its natural enemy attacks, it oozes purple fluid and escapes.
SoulSilver
Generation V Unova
#—
Black Long ago, its entire back was shielded with a sturdy shell. There are traces of it left in its cells.
White
Black 2 Long ago, its entire back was shielded with a sturdy shell. There are traces of it left in its cells.
White 2
Generation VI Kalos
#—
Hoenn
#—
X When its natural enemy attacks, it oozes purple fluid and escapes.
Y It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.
Omega Ruby When its natural enemy attacks, it oozes purple fluid and escapes.
Alpha Sapphire It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.
Generation VII Alola
SM: #261
Alola
USUM: #342
Kanto
#—
This Pokémon has no Pokédex entries in Let's Go, Pikachu! and Let's Go, Eevee!.
West Sea
Sun It has strong regenerative capabilities. Even if parts of it are bitten off by fish Pokémon, it will return to normal within a few hours.
Moon Plankton, invisible to the naked eye, is its main food source. It comes onto the land periodically, but the reason for this is not known.
Ultra Sun Long ago, it had a shell on its back. There's now a vestigial plate on its back that's hard but thin.
Ultra Moon Their shape and color change, depending on their environment and diet. There are many of them at beaches where the waves are calm.
East Sea
Sun A team of researchers is scouring the oceans of the world in search of a Gastrodon in a color never seen before.
Moon Experiments are being conducted to discover what happens when a Gastrodon is raised in a location other than the sea where it was born.
Ultra Sun When it's attacked, it gushes a purple liquid that's not poisonous but makes Gastrodon's meat bitter and inedible.
Ultra Moon A relative of Shellder and Cloyster, this ocean dweller sometimes comes onto land in search of food.
Generation VIII Galar
#231
Sinnoh
#061
Hisui
#083
Brilliant Diamond It has a pliable body without any bones. If any part of its body is torn off, it grows right back.
Shining Pearl It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.
West Sea
Sword Its search for food sometimes leads it onto land, where it leaves behind a sticky trail of slime as it passes through.
Shield The softness of its body helps disperse the force of impacts, so although its body is uncommonly squishy, it's also surprisingly resilient.
Legends: Arceus Eats beach sand for nourishment. Should one Gastrodon encounter another of a different color, a fierce battle will inevitably ensue.
East Sea
Sword It secretes a purple fluid to deter enemies. This fluid isn't poisonous—instead, it's super sticky, and once it sticks, it's very hard to unstick.
Shield Its body is covered in a sticky slime. It's very susceptible to dehydration, so it can't spend too much time on land.
Legends: Arceus Found more often on the land than in the sea. More active when it's cloudy or rainy out than when the weather is fair.
Generation IX Paldea
#328
Kitakami
#—
Blueberry
#—
West Sea
Scarlet Its whole body is sticky with mucus. In the past, this form of Gastrodon was by far the more numerous one.
Violet It appears on beaches where the waters are shallow. Once it catches prey, it will slowly melt them with its mucus before slurping them up.
East Sea
Scarlet They normally inhabit rocky seashores, but in times of continuous rain, they can sometimes be found in the mountains, far from the sea.
Violet Fishers say that they didn't see many of these Pokémon in the past, but this form of Gastrodon is now increasing in number.


Pokédex Image Gastrodon SM.png Pokédex Image Gastrodon-East SM.png Pokédex Image Gastrodon SV.png
West Sea Gastrodon in the Alola Pokédex East Sea Gastrodon in the Alola Pokédex East Sea Gastrodon in the Paldea Pokédex

Game locations

This Pokémon was unavailable prior to Generation IV.
Generation IV
Diamond Pearl
Routes 218 and 221, Fuego Ironworks (tall grass) (West Sea)
Routes 222, 224, and 230 (tall grass) (East Sea)
Platinum
Route 218, Fuego Ironworks (tall grass) (West Sea)
Routes 205 and 218, Canalave City, Valley Windworks, Fuego Ironworks (Surfing) (West Sea)
Routes 212, 213, and 224, Pastoria City (Surfing) (East Sea)
HeartGold SoulSilver
Evolve Pokéwalker Shellos (West Sea)
Trade (East Sea)
Generation V
Black White
Trade
Black 2 White 2
Evolve Shellos
Generation VI
X Y
Friend Safari (Ground) (West Sea)
Omega Ruby
Evolve Shellos (West Sea)
Alpha Sapphire
Evolve Shellos (East Sea)
Generation VII
Sun Moon
Ancient Poni Path, Exeggutor Island, Poni Wilds (East Sea)
Trade (West Sea)
Ultra Sun Ultra Moon
Ancient Poni Path, Exeggutor Island, Poni Wilds (East Sea)
Poni Breaker Coast (Surfing) (East Sea)
Evolve Shellos (West Sea)
Let's Go Pikachu Let's Go Eevee
Unobtainable
Generation VIII
Sword Shield
Pokémon HOME (West Sea)
Route 9, Galar Mine No. 2, Dusty Bowl, Giant's Mirror (East Sea)
Bridge Field, Dusty Bowl, Giant's Cap, Giant's Mirror, Lake of Outrage, Rolling Fields, South Lake Miloch, West Lake Axewell (Max Raid Battle) (East Sea)
Expansion Pass
Max Lair (Dynamax Adventure) (East Sea)
Brilliant Diamond Shining Pearl
Routes 218 and 221, Fuego Ironworks (tall grass) (West Sea)
Routes 222, 224, and 230 (tall grass) (East Sea)
Grand Underground - Fountainspring Cave
Legends: Arceus
Obsidian Fieldlands: Ramanas Island, Sandgem Flats, massive mass outbreaks (West Sea)
Cobalt Coastlands: Seagrass Haven (additional Alpha icon.png), massive mass outbreaks (East Sea)
Generation IX
Scarlet Violet
North Province: Area One, Area Three (East Sea)
North Province: Casseroya Lake (West Sea)
Tera Raid Battles (4★) (WestV/EastS Sea)


In side games

This Pokémon was unavailable prior to Generation IV.
Generation IV
MD Time MD Darkness
Brine Cave (B1F-B9F, Lower Brine Cave B1F) (West Sea)
Craggy Coast (B1F-B9F) (East Sea)
MD Sky
Brine Cave (B1F-B9F, Lower Brine Cave B1F) (West Sea)
Craggy Coast (B1F-B9F) (East Sea)
Ranger: SoA
Marine Cave, Volcano Cave
Rumble
Bright Beach
Ranger: GS
Faldera Island
Generation V
Rumble Blast
Desert: Rugged Flats (West Sea)
Beach: Sunny Seashore (East Sea)
Rumble U
Secret Warehouse: The Enemies Within (West/East Sea)
Generation VI
Battle Trozei
Safari Jungle: Stage 3Sa
Island of Haste: Stage 4
Rumble World
Origin Hideaway: Secret Cove (All Areas), Distortion Land: Vast Ocean (All Areas) (West/East Sea)
Generation VII
Rumble Rush
Garchomp Sea, Arceus Sea, Garchomp SeaFinal (West/East Sea)
Generation VIII
This Pokémon is unavailable in Generation VIII side games.
Cross-Generation
Shuffle
Violeta Palace: Stage 389 (West Sea)
Prasino Woods: Stage 559 (East Sea)
Masters EX
Trainer Lodge Friendship Level 100: Cynthia & Gastrodon (West Sea)


In events

West Sea Gastrodon
Games Event Language/Region Location Level Distribution period
SMUSUM Paul Ruiz's West Sea Gastrodon All United States 50 June 21 to 23, 2019
East Sea Gastrodon
Games Event Language/Region Location Level Distribution period
SwSh Hirofumi Kimura's East Sea Gastrodon All online 50 August 22 to 23, 2020
SwSh Eric Rios's East Sea Gastrodon All online 50 June 24 to 27, 2022
SV Wonseok Jung's East Sea Gastrodon All online 50 June 17 to 18, 2023
SV Eduardo Cunha's East Sea Gastrodon All online 50 August 10 to 14, 2023

Held Items

Games Held items
Legends: Arceus
None.png Normal
Grit items by level
Alpha icon.png Alpha
Exp. Candy M Exp. Candy M (100%)
Grit items by level

Stats

Base stats

Stat Range
At Lv. 50 At Lv. 100
111
171 - 218 332 - 426
83
79 - 148 153 - 291
68
65 - 132 126 - 258
92
87 - 158 170 - 311
82
78 - 147 152 - 289
39
39 - 100 74 - 194
Total:
475
Other Pokémon with this total
  • Minimum stats are calculated with 0 EVs, IVs of 0, and (if applicable) a hindering nature.
  • Maximum stats are calculated with 252 EVs, IVs of 31, and (if applicable) a helpful nature.

Pokéathlon stats

Speed
1/2
Power
4/5 ★★★★
Skill
3/3 ★★★
Stamina
5/5 ★★★★★
Jump
2/2 ★★
Total
15/17 ★★★


Type effectiveness

Under normal battle conditions in Generation IX, this Pokémon is:
Damaged
normally by:
Normal
Fighting
Flying
Poison ½×
Ground
Rock ½×
Bug
Ghost
Steel ½×
Fire ½×
Water
Grass
Electric
Psychic
Ice
Dragon
Dark
Fairy
None
Weak to:
Normal
Fighting
Flying
Poison ½×
Ground
Rock ½×
Bug
Ghost
Steel ½×
Fire ½×
Water
Grass
Electric
Psychic
Ice
Dragon
Dark
Fairy
None
Immune to:
Normal
Fighting
Flying
Poison ½×
Ground
Rock ½×
Bug
Ghost
Steel ½×
Fire ½×
Water
Grass
Electric
Psychic
Ice
Dragon
Dark
Fairy
None
Resistant to:
Normal
Fighting
Flying
Poison ½×
Ground
Rock ½×
Bug
Ghost
Steel ½×
Fire ½×
Water
Grass
Electric
Psychic
Ice
Dragon
Dark
Fairy
None
Notes:

Learnset

By leveling up

Generation IX
Other generations:
IV - V - VI - VII - VIII
 Level   Move   Type   Cat.   Pwr.   Acc.   PP
011 Water Gun Water Special 04040 100100% 25
011 Mud-Slap Ground Special 02020 100100% 10
011 Harden Normal Status 0000 00——% 30
011 Recover Normal Status 0000 00——% 5
1515 Water Pulse Water Special 06060 100100% 20
2020 Ancient Power Rock Special 06060 100100% 5
2525 Body Slam Normal Physical 08585 100100% 15
3333 Muddy Water Water Special 09090 08585% 10
3939 Earth Power Ground Special 09090 100100% 10
4646 Rain Dance Water Status 0000 00——% 5
5353 Memento Dark Status 0000 100100% 10
  • Bold indicates a move that gets STAB when used by Gastrodon
  • Italic indicates a move that gets STAB only when used by an evolution of Gastrodon
  • Click on the generation numbers at the top to see level-up moves from other generations

By TM

Generation IX
Other generations:
IV - V - VI - VII - VIII
   TM   Move   Type   Cat.   Pwr.   Acc.   PP 
TM001Bag TM Normal SV Sprite.png TM001 Take Down Normal Physical 09090 085}}85% 20
TM005Bag TM Ground SV Sprite.png TM005 Mud-Slap Ground Special 02020 100}}100% 10
TM007Bag TM Normal SV Sprite.png TM007 Protect Normal Status 0000 00—}}—% 10
TM011Bag TM Water SV Sprite.png TM011 Water Pulse Water Special 06060 100}}100% 20
TM022Bag TM Water SV Sprite.png TM022 Chilling Water Water Special 05050 100}}100% 20
TM025Bag TM Normal SV Sprite.png TM025 Facade Normal Physical 07070 100}}100% 20
TM028Bag TM Ground SV Sprite.png TM028 Bulldoze Ground Physical 06060 100}}100% 20
TM034Bag TM Ice SV Sprite.png TM034 Icy Wind Ice Special 05555 095}}95% 15
TM035Bag TM Ground SV Sprite.png TM035 Mud Shot Ground Special 05555 095}}95% 15
TM036Bag TM Rock SV Sprite.png TM036 Rock Tomb Rock Physical 06060 095}}95% 15
TM047Bag TM Normal SV Sprite.png TM047 Endure Normal Status 0000 00—}}—% 10
TM050Bag TM Water SV Sprite.png TM050 Rain Dance Water Status 0000 00—}}—% 5
TM051Bag TM Rock SV Sprite.png TM051 Sandstorm Rock Status 0000 00—}}—% 10
TM052Bag TM Ice SV Sprite.png TM052 Snowscape Ice Status 0000 00—}}—% 10
TM055Bag TM Ground SV Sprite.png TM055 Dig Ground Physical 08080 100}}100% 10
TM066Bag TM Normal SV Sprite.png TM066 Body Slam Normal Physical 08585 100}}100% 15
TM070Bag TM Normal SV Sprite.png TM070 Sleep Talk Normal Status 0000 00—}}—% 10
TM076Bag TM Rock SV Sprite.png TM076 Rock Blast Rock Physical 02525 090}}90% 10
TM077Bag TM Water SV Sprite.png TM077 Waterfall Water Physical 08080 100}}100% 15
TM084Bag TM Ground SV Sprite.png TM084 Stomping Tantrum Ground Physical 07575 100}}100% 10
TM085Bag TM Psychic SV Sprite.png TM085 Rest Psychic Status 0000 00—}}—% 5
TM086Bag TM Rock SV Sprite.png TM086 Rock Slide Rock Physical 07575 090}}90% 10
TM090Bag TM Ground SV Sprite.png TM090 Spikes Ground Status 0000 00—}}—% 20
TM103Bag TM Normal SV Sprite.png TM103 Substitute Normal Status 0000 00—}}—% 10
TM110Bag TM Water SV Sprite.png TM110 Liquidation Water Physical 08585 100}}100% 10
TM116Bag TM Rock SV Sprite.png TM116 Stealth Rock Rock Status 0000 00—}}—% 20
TM123Bag TM Water SV Sprite.png TM123 Surf Water Special 09090 100}}100% 15
TM128Bag TM Psychic SV Sprite.png TM128 Amnesia Psychic Status 0000 00—}}—% 20
TM130Bag TM Normal SV Sprite.png TM130 Helping Hand Normal Status 0000 00—}}—% 20
TM133Bag TM Ground SV Sprite.png TM133 Earth Power Ground Special 09090 100}}100% 10
TM135Bag TM Ice SV Sprite.png TM135 Ice Beam Ice Special 09090 100}}100% 10
TM142Bag TM Water SV Sprite.png TM142 Hydro Pump Water Special 110110 080}}80% 5
TM143Bag TM Ice SV Sprite.png TM143 Blizzard Ice Special 110110 070}}70% 5
TM148Bag TM Poison SV Sprite.png TM148 Sludge Bomb Poison Special 09090 100}}100% 10
TM149Bag TM Ground SV Sprite.png TM149 Earthquake Ground Physical 100100 100}}100% 10
TM150Bag TM Rock SV Sprite.png TM150 Stone Edge Rock Physical 100100 080}}80% 5
TM152Bag TM Normal SV Sprite.png TM152 Giga Impact Normal Physical 150150 090}}90% 5
TM163Bag TM Normal SV Sprite.png TM163 Hyper Beam Normal Special 150150 090}}90% 5
TM171Bag TM Normal SV Sprite.png TM171 Tera Blast Normal Special 08080 100}}100% 10
TM176Bag TM Ground SV Sprite.png TM176 Sand Tomb Ground Physical 03535 085}}85% 15
TM193Bag TM Normal SV Sprite.png TM193 Weather Ball Normal Special 05050 100}}100% 10
TM202Bag TM Normal SV Sprite.png TM202 Pain Split Normal Status 0000 00—}}—% 20
TM208Bag TM Water SV Sprite.png TM208 Whirlpool Water Special 03535 085}}85% 15
TM209Bag TM Water SV Sprite.png TM209 Muddy Water Water Special 09090 085}}85% 10
TM214Bag TM Poison SV Sprite.png TM214 Sludge Wave Poison Special 09595 100}}100% 10
TM219Bag TM Bug SV Sprite.png TM219 Skitter Smack Bug Physical 07070 090}}90% 10
TM224Bag TM Ghost SV Sprite.png TM224 Curse Ghost Status 0000 00—}}—% 10
  • Bold indicates a move that gets STAB when used by Gastrodon
  • Italic indicates a move that gets STAB only when used by an evolution or an alternate form of Gastrodon
  • Click on the generation numbers at the top to see TM moves from other generations

By breeding

Generation IX
Other generations:
IV - V - VI - VII - VIII
 Parent   Move   Type   Cat.   Pwr.   Acc.   PP 
GrimerGrimerMukMuk
Acid Armor Poison Status —% 20
KoffingWeezingWeezingSlugmaMagcargo
Clear Smog Poison Special 50 —% 15
ChewtleDrednawQuaquaval
Counter Fighting Physical 100% 20
SlowpokeSlowpokeSlowbroSlowbroSlowkingSlowkingGastlyHaunterGengarShuppetBanetteDuskullDusclopsDusknoirSpiritombLitwickLampentChandelurePhantumpTrevenantPincurchin
Curse Ghost Status —% 10
DewpiderAraquanid
Mirror Coat Psychic Special 100% 20
LaprasWooperQuagsireLotadLombreLudicoloWingullPelipperSurskitPiplupPrinplupEmpoleonEiscue
Mist Ice Status —% 30
GrimerMukKoffingWeezingWeezingGulpinSwalot
Sludge Poison Special 65 100% 20
PelipperGulpinSwalotDrifloonDrifblimCramorant
Spit Up Normal Special 100% 10
PelipperGulpinSwalotDrifloonDrifblimCramorant
Stockpile Normal Status —% 20
PelipperGulpinSwalotDrifloonDrifblimCramorant
Swallow Normal Status —% 10
SlowpokeSlowpokeSlowbroSlowbroSlowkingSlowkingWooperWooperQuagsireClodsireSlugmaMagcargoKingdraGulpinSwalotChimecho
Yawn Normal Status —% 10
  • Moves marked with an asterisk (*) must be chain bred onto Gastrodon
  • Bold indicates a move that gets STAB when used by Gastrodon
  • Italic indicates a move that gets STAB only when used by an evolution of Gastrodon
  • Click on the generation numbers at the top to see Egg moves from other generations

By a prior evolution

Generation IX
Other generations:
IV - V - VI - VII - VIII
 Stage   Move   Type   Cat.   Pwr.   Acc.   PP 
This Pokémon has no moves exclusive to prior evolutions.
  • Bold indicates a move that gets STAB when used by Gastrodon
  • Italic indicates a move that gets STAB only when used by an evolution of Gastrodon
  • Click on the generation numbers at the top to see moves from other generations

Side game data

West Sea

Pokémon Mystery Dungeon
Explorers of Time, Explorers of Darkness, and Explorers of Sky
MDP E 423.png Body size: 1
Recruit rate: 8.2%
IQ group: E
Pokémon Ranger: Shadows of Almia
Group:
Water
Poké Assist: Water PA.png
Water
Field move: Soak 2 field move.png
(Soak ×2)
Browser entry R-038
It spits orbs of water and hunks of dirt to attack.
Pokémon Ranger: Guardian Signs
Group:
Water
Poké Assist:
(present)
Water Assist.png
Water
Field move:
(present)
Soak 3 field move.png
(Soak ×3)
Not available in the past.
Browser entry R-087
It attacks by spitting bubbles that make Pokémon Slowed.
Pokémon Rumble
Attack ●●●
Defense ●●●
Speed ●●●
Pokémon Rumble Blast
Attack ●●●
Defense ●●●
Speed ●●●
Pokémon Rumble Rush
Rush423Body.png Walking Speed: 2.33 seconds Base HP: 61
Base Attack: 78 Base Defense: 54 Base Speed: 60
Pokémon Battle Trozei
Water
Attack Power: ★★★★★

BT423.png

Pokémon Shuffle
None Shuffle.png
Water
None Shuffle.png Attack Power: 60 - 105 Raise Max Level.png 5

#529
Shuffle423.png

Power of 5
Increases damage when you make a match of five.


Pokémon GO
GO423.png Base HP: 244 Base Attack: 169 Base Defense: 143
Egg Distance: N/A Buddy Distance: 3 km Evolution Requirement: N/A
Fast Attacks: Mud-Slap, Hidden Power
Charged Attacks: Water Pulse, Earth Power*, Body Slam, Earthquake×

East Sea

Pokémon Mystery Dungeon
Explorers of Time, Explorers of Darkness, and Explorers of Sky
MDP E 423E.png Body size: 1
Recruit rate: 8.2%
IQ group: E
Pokémon Rumble
Attack ●●●
Defense ●●●
Speed ●●●
Pokémon Rumble Blast
Attack ●●●
Defense ●●●
Speed ●●●
Pokémon Rumble Rush
Rush423EBody.png Walking Speed: 2.33 seconds Base HP: 61
Base Attack: 78 Base Defense: 54 Base Speed: 60
Pokémon Battle Trozei
Water
Attack Power: ★★★★★

BT423E.png

Pokémon Shuffle
None Shuffle.png
Ground
None Shuffle.png Attack Power: 60 - 105 Raise Max Level.png 5

#529
Shuffle423E.png

Swap+
Sometimes replaces three disruptions with this Pokémon.


Pokémon GO
GO423E.png Base HP: 244 Base Attack: 169 Base Defense: 143
Egg Distance: N/A Buddy Distance: 3 km Evolution Requirement: N/A
Fast Attacks: Mud-Slap, Hidden Power
Charged Attacks: Water Pulse, Earth Power*, Body Slam, Earthquake×

Form data

Gastrodon has two different forms: West Sea Gastrodon and East Sea Gastrodon. In most cases, where it is encountered in the wild determines its form. This is purely a cosmetic difference, and this Pokémon cannot change between forms.

West Sea Gastrodon is pink and brown in color, whereas East Sea Gastrodon is blue and green. There is also a slight difference in shape depending on the form.

In Sinnoh and Hisui, West Sea Gastrodon is encountered west of Mount Coronet, while East Sea Gastrodon is encountered east of Mount Coronet. In Paldea, West Sea Gastrodon is encountered in Casseroya Lake, while East Sea Gastrodon is encountered in North Province (Area One); both forms can also be found in Tera Raid Battles regardless of location. In other regions, only one form appears in the wild per game (with the other only obtainable via trading or transfer): Gastrodon only appears in its West Sea form in Kalos's Friend Safari, and in Alola and Galar, only East Sea Gastrodon appear in the wild.

Evolution data

West Sea

0422Shellos-West.png
Unevolved
Shellos
West Sea
 Water 
Rare Candy
Level 30
0423Gastrodon-West.png
First evolution
Gastrodon
West Sea
 Water  Ground 


East Sea

0422Shellos-East.png
Unevolved
Shellos
East Sea
 Water 
Rare Candy
Level 30
0423Gastrodon-East.png
First evolution
Gastrodon
East Sea
 Water  Ground 


Sprites

This Pokémon was unavailable prior to Generation IV.
Generation IV
Diamond Pearl Platinum HeartGold SoulSilver
Spr 4d 423.png Spr b 4d 423.png Spr 4p 423.png Spr b 4p 423.png Spr 4h 423.png Spr b 4h 423.png
Spr 4d 423E.png Spr b 4d 423E.png Spr 4p 423E.png Spr b 4p 423E.png Spr 4h 423E.png Spr b 4h 423E.png
Spr 4d 423 s.png Spr b 4d 423 s.png Spr 4p 423 s.png Spr b 4p 423 s.png Spr 4h 423 s.png Spr b 4h 423 s.png
Spr 4d 423E s.png Spr b 4d 423E s.png Spr 4p 423E s.png Spr b 4p 423E s.png Spr 4h 423E s.png Spr b 4h 423E s.png
Front Back Front Back Front Back
Generation V
Black White Black 2 White 2
Spr 5b 423.png Spr b 5b 423.png Spr 5b2 423.png Spr b 5b2 423.png
Spr 5b 423E.png Spr b 5b 423E.png Spr 5b2 423E.png Spr b 5b2 423E.png
Spr 5b 423 s.png Spr b 5b 423 s.png Spr 5b2 423 s.png Spr b 5b2 423 s.png
Spr 5b 423E s.png Spr b 5b 423E s.png Spr 5b2 423E s.png Spr b 5b2 423E s.png
Front Back Front Back
Generation VI
X Y Omega Ruby Alpha Sapphire
Spr 6x 423.png
Spr b 6x 423.png
Spr 6o 423.png
Spr b 6o 423.png
Spr 6x 423E.png
Spr b 6x 423E.png
Spr 6o 423E.png
Spr b 6o 423E.png
Spr 6x 423 s.png
Spr b 6x 423 s.png
Spr 6o 423 s.png
Spr b 6o 423 s.png
Spr 6x 423E s.png
Spr b 6x 423E s.png
Spr 6o 423E s.png
Spr b 6o 423E s.png
Front Back Front Back
Generation VII
Sun Moon Ultra Sun Ultra Moon
Spr 7s 423.png
Spr b 7s 423.png
Spr 7s 423.png
Spr b 7s 423.png
Spr 7s 423E.png
Spr b 7s 423E.png
Spr 7s 423E.png
Spr b 7s 423E.png
Spr 7s 423 s.png
Spr b 7s 423 s.png
Spr 7s 423 s.png
Spr b 7s 423 s.png
Spr 7s 423E s.png
Spr b 7s 423E s.png
Spr 7s 423E s.png
Spr b 7s 423E s.png
Front Back Front Back
Generation VIII
Sword Shield
Spr 8s 423.png
Spr 8s 423 s.png
Spr 8s 423E.png
Spr 8s 423E s.png
Legends: Arceus
Spr 8a 423.png
Spr 8a 423 s.png
Spr 8a 423E.png
Spr 8a 423E s.png
Cross-Generation
HOME
HOME0423.png HOME0423 s.png
HOME0423E.png HOME0423E s.png
423MS.png For other sprites and images, please see Gastrodon images on the Bulbagarden Archives.


Trivia

Early back sprite of Gastrodon
  • According to an interview in Nintendo Power with Game Freak, Gastrodon and Shellos were originally intended for Pokémon Ruby and Sapphire.[1]
  • Both Shellos and Gastrodon have early back sprites within the game data of Pokémon Diamond and Pearl; however, there are no front sprites for these forms.
  • In Diamond and Pearl, no in-game Trainer uses East Sea Gastrodon in battle, even on the east side of Mount Coronet.
  • Prior to Generation VI, Gastrodon's shape was Body14.png.
  • Gastrodon and its pre-evolution were accidentally released in Pokémon GO on April 29, 2019, but were removed shortly after. On May 17, 2019, they made their official debut along with various other Pokémon from Generation IV.
  • Gastrodon was featured alongside several bovine Pokémon, namely Tauros, Miltank, and Bouffalant, in multiple promotional artworks created to celebrate New Year's 2021, also known as the Year of the Ox.
  • The Pokémon Scarlet and Violet Pokédex entries mentioning a decrease in West Sea Gastrodon and an increase in East Sea Gastrodon may be an inverse on the changes in the populations of real life sea slug species due to climate change — with species that better survive in warmer waters becoming more common.[2]

Origin

Gastrodon is based on a sea slug,[1] perhaps one of the order Opisthobranchia. It may also be based on a sea hare, a type of sea slug that is also known to secrete purple fluid in self-defense. The tentacles on Gastrodon's head are shaped like cattle horns, which may be a visual pun on 海牛 umiushi (Japanese for sea slug, derived from 海 umi (sea) and 牛 ushi (cow; cattle)).

Name origin

Gastrodon may be a combination of gastropod or Gastropteron (genus of sea slug), and don (Spanish for lord) or -don (common suffix in dinosaur names derived from the Ancient Greek word for tooth).

Tritodon may be a combination of Tritoniidae (family of shell-less marine gastropod molluscs) or Triton snail (marine gastropod mollusk named after Triton, Greek god of the sea), and don (Spanish for lord) or -don (common suffix in dinosaur names derived from the Ancient Greek word for tooth). It may also be derived from torito (Spanish for little bull).

In other languages

Language Title Meaning
Japan Flag.png Japanese トリトドン Tritodon From Tritoniidae, Triton snail, Triton, don, and -don; possibly also torito
France Flag.png French Tritosor From Triton and -saurus
Spain Flag.png Spanish Gastrodon Same as English name
Germany Flag.png German Gastrodon Same as English name
Italy Flag.png Italian Gastrodon Same as English name
South Korea Flag.png Korean 트리토돈 Tritodon Transcription of Japanese name
China and Taiwan Flags.png Mandarin Chinese 海兔獸 / 海兔兽 Hǎitùshòu*
海牛獸 / 海牛兽 Hǎiniúshòu*
From 海兔 hǎitù and 獸 / 兽 shòu
From 海牛 hǎiniú and 獸 / 兽 shòu
Hong Kong Flag.png Cantonese Chinese 海兔獸 Hóitousau*
海牛獸 Hóingàuhsau *
From 海兔 hóitou and sau
From 海牛 hóingàuh and sau


West Sea

Language Title
Japan Flag.png Japanese にしのうみ Nishi no Umi
Chinese Cantonese 西海 Sāihói
Mandarin 西海 Xīhǎi
France Flag.png French Mer Occident
Germany Flag.png German Westliches Meer
India Flag.png Hindi वेस्ट-सी West-Sea
Indonesia Flag.png Indonesian Laut Barat
Italy Flag.png Italian Mare Ovest
South Korea Flag.png Korean 서쪽바다 Seojjok Bada
Malaysia Flag.png Malaysian Laut Barat
Portuguese Brazil Flag.png Brazil Mar Ocidental*
Mar Oeste*
Portugal Flag.png Portugal Mar Oeste
Spain Flag.png Spanish Mar Oeste
Thailand Flag.png Thai ทะเลตะวันตก Thale Tawantok
Turkey Flag.png Turkish Batı Denizi

East Sea

Language Title
Japan Flag.png Japanese ひがしのうみ Higashi no Umi
Chinese Cantonese 東海 Dūnghói
Mandarin 東海 / 东海 Dōnghǎi
France Flag.png French Mer Orient
Germany Flag.png German Östliches Meer
India Flag.png Hindi ईस्ट-सी East-Sea
Indonesia Flag.png Indonesian Laut Timur
Italy Flag.png Italian Mare Est
South Korea Flag.png Korean 동쪽바다 Dongjjok Bada
Malaysia Flag.png Malaysian Laut Timur
Portugal Flag.png Portuguese Mar Leste
Spain Flag.png Spanish Mar Este
Thailand Flag.png Thai ทะเลตะวันออก Thale Tawanok
Turkey Flag.png Turkish Doğu Denizi


Related articles

References

  1. 1.0 1.1 Junichi Masuda: There's also a sea-slug Pokémon that we weren't able to put in Ruby and Sapphire that we were able to put in [Pokémon Diamond and Pearl]... | "Pearls of Wisdom", Nintendo Power Issue 215, May 2007, p. 37 (Scan)
  2. Citizen science project counting NSW sea slugs helps map effect of climate change on species (retrieved December 2nd, 2022)

External links


0422MS.png #0422: Shellos
Pokémon
#0424: Ambipom 0424MS.png
Project Pokédex logo.png This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon as a species.