Gastrodon (Pokémon)

For Pokémon GO information on this species, see the game's section.
← #422: Shellos	Pokémon	#424: Ambipom →
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 #423 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	Footprint {{{form2}}}
Pokédex color   Purple Other forms may have other colors.	Base friendship 70
External Links On Smogon Pokédex: Generation IV Generation V Generation VI Generation VII Generation VIII Generation IX Artwork on Bulbagarden Archives

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 have two different appearances: West Sea (pink and brown) and East Sea (blue and green), 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 three black eyes with white irises. A yellow stripe runs along the edge of its mantle, through its lower two 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, as well as a smaller, straighter pair of tentacles on its neck. Its underside is pink, while its mantle is brown with three pink spots on each side. There are 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 more upward. Its underside is blue, while its mantle is green with two blue 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, though they are still able to breed. It is also a relative of Shellder and Cloyster. When it is threatened, it oozes purple fluid and flees. Gastrodon lives in shallow tidal pools. Its body is soft and squishy, yet surprisingly resilient. It has strong regenerative capabilities that allow it to recover from injures within a few hours. Its diet consists mainly of plankton, but it is occasionally known to look for food on land, leaving behind a trail of sticky slime. However, Gastrodon cannot stay on land for too long due to its body being highly vulnerable to dehydration. In ancient times, it had a shell on its back, which gradually became a thin yet hard vestigial plate.

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.

East Sea Gastrodon debuted in Familiarity Breeds Strategy!, under the ownership of Paul. It battled Ash's Staraptor and Buizel in their League 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.

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.

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 inthe Sword & Shield arc.

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!‎. 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. 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.
Generation VIII Galar #231 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. 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.

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)

In side games

This Pokémon was unavailable prior to Generation IV.
Generation IV MD Time MD Darkness West Sea: Brine Cave (B1F-B9F, Lower Brine Cave B1F) East Sea: Craggy Coast (B1F-B9F) MD Sky West Sea: Brine Cave (B1F-B9F, Lower Brine Cave B1F) East Sea: Craggy Coast (B1F-B9F) 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 (both forms)
Generation VI Battle Trozei Safari Jungle: Stage 3Sa Island of Haste: Stage 4 Shuffle Violeta Palace: Stage 389 (West Sea) Prasino Woods: Stage 559 (East Sea) Rumble World Origin Hideaway: Secret Cove (All Areas), Distortion Land: Vast Ocean (All Areas)
Generation VII Rumble Rush Garchomp Sea, Arceus Sea, Garchomp SeaFinal

In events

Games	Event	Language/Region	Location	Level	Distribution period
SMUSUM	Paul Ruiz's West Sea Gastrodon	All	United States	50	June 21 to 23, 2019
SwSh	Pokémon Japan Championships 2019 East Sea Gastrodon	Japanese	online	50	Ausgust 22 to 23, 2020

Held items

Game		Held Item(s)
Events*		Expert Belt (100%)

Stats

Base stats

Stat		Range
		At Lv. 50	At Lv. 100
HP: 111		171 - 218	332 - 426
Attack: 83		79 - 148	153 - 291
Defense: 68		65 - 132	126 - 258
Sp. Atk: 92		87 - 158	170 - 311
Sp. Def: 82		78 - 147	152 - 289
Speed: 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 1× Fighting 1× Flying 1× Poison ½× Ground 1× Rock ½× Bug 1× Ghost 1× Steel ½× Fire ½× Water 1× Grass 4× Electric 0× Psychic 1× Ice 1× Dragon 1× Dark 1× Fairy 1× None

Weak to: Normal 1× Fighting 1× Flying 1× Poison ½× Ground 1× Rock ½× Bug 1× Ghost 1× Steel ½× Fire ½× Water 1× Grass 4× Electric 0× Psychic 1× Ice 1× Dragon 1× Dark 1× Fairy 1× None

Immune to: Normal 1× Fighting 1× Flying 1× Poison ½× Ground 1× Rock ½× Bug 1× Ghost 1× Steel ½× Fire ½× Water 1× Grass 4× Electric 0× Psychic 1× Ice 1× Dragon 1× Dark 1× Fairy 1× None

Resistant to: Normal 1× Fighting 1× Flying 1× Poison ½× Ground 1× Rock ½× Bug 1× Ghost 1× Steel ½× Fire ½× Water 1× Grass 4× Electric 0× Psychic 1× Ice 1× Dragon 1× Dark 1× Fairy 1× None

Notes: If this Pokémon is given a Ring Target, the effectiveness of  Electric-type  moves is 2×. If this Pokémon has Storm Drain, the effectiveness of  Water-type  moves is 0×.

Learnset

By leveling up

Generation VIII Other generations: IV - V - VI - VII - IX

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——% 10 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/TR

Generation VIII Other generations: IV - V - VI - VII - IX

TM   Move   Type   Cat.   Pwr.   Acc.   PP  TM08 TM08 Hyper Beam Normal Special 150150 090}}90% 5 TM09 TM09 Giga Impact Normal Physical 150150 090}}90% 5 TM15 TM15 Dig Ground Physical 08080 100}}100% 10 TM21 TM21 Rest Psychic Status 0000— 00—}}—% 10 TM22 TM22 Rock Slide Rock Physical 07575 090}}90% 10 TM24 TM24 Snore Normal Special 05050 100}}100% 15 TM25 TM25 Protect Normal Status 0000— 00—}}—% 10 TM27 TM27 Icy Wind Ice Special 05555 095}}95% 15 TM31 TM31 Attract Normal Status 0000— 100}}100% 15 TM32 TM32 Sandstorm Rock Status 0000— 00—}}—% 10 TM33 TM33 Rain Dance Water Status 0000— 00—}}—% 5 TM35 TM35 Hail Ice Status 0000— 00—}}—% 10 TM36 TM36 Whirlpool Water Special 03535 085}}85% 15 TM39 TM39 Facade Normal Physical 07070 100}}100% 20 TM45 TM45 Dive Water Physical 08080 100}}100% 10 TM46 TM46 Weather Ball Normal Special 05050 100}}100% 10 TM48 TM48 Rock Tomb Rock Physical 06060 095}}95% 15 TM49 TM49 Sand Tomb Ground Physical 03535 085}}85% 15 TM53 TM53 Mud Shot Ground Special 05555 095}}95% 15 TM55 TM55 Brine Water Special 06565 100}}100% 10 TM76 TM76 Round Normal Special 06060 100}}100% 15 TM81 TM81 Bulldoze Ground Physical 06060 100}}100% 20 TM98 TM98 Stomping Tantrum Ground Physical 07575 100}}100% 10 TR01 TR01 Body Slam Normal Physical 08585 100}}100% 15 TR03 TR03 Hydro Pump Water Special 110110 080}}80% 5 TR04 TR04 Surf Water Special 09090 100}}100% 15 TR05 TR05 Ice Beam Ice Special 09090 100}}100% 10 TR06 TR06 Blizzard Ice Special 110110 070}}70% 5 TR10 TR10 Earthquake Ground Physical 100100 100}}100% 10 TR16 TR16 Waterfall Water Physical 08080 100}}100% 15 TR17 TR17 Amnesia Psychic Status 0000— 00—}}—% 20 TR20 TR20 Substitute Normal Status 0000— 00—}}—% 10 TR22 TR22 Sludge Bomb Poison Special 09090 100}}100% 10 TR26 TR26 Endure Normal Status 0000— 00—}}—% 10 TR27 TR27 Sleep Talk Normal Status 0000— 00—}}—% 10 TR45 TR45 Muddy Water Water Special 09090 085}}85% 10 TR67 TR67 Earth Power Ground Special 09090 100}}100% 10 TR75 TR75 Stone Edge Rock Physical 100100 080}}80% 5 TR78 TR78 Sludge Wave Poison Special 09595 100}}100% 10 TR84 TR84 Scald Water Special 08080 100}}100% 15

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 TM moves from other generations

By breeding

Generation VIII Other generations: IV - V - VI - VII - IX

Parent   Move   Type   Cat.   Pwr.   Acc.   PP  Acid Armor Poison Status — —% 20 Clear Smog Poison Special 50 —% 15 Counter Fighting Physical — 100% 20 Curse Ghost Status — —% 10 Mirror Coat Psychic Special — 100% 20 Mist Ice Status — —% 30 Sludge Poison Special 65 100% 20 Spit Up Normal Special — 100% 10 Stockpile Normal Status — —% 20 Swallow Normal Status — —% 10 Yawn Normal Status — —% 10

Moves marked with an asterisk (*) must be chain bred onto Gastrodon in Generation VIII Moves marked with a double dagger (‡) can only be bred from a Pokémon who learned the move in an earlier generation. Moves marked with a superscript game abbreviation can only be bred onto Gastrodon in that game. 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 tutoring

Generation VIII Other generations: IV - V - VI - VII - IX

Game   Move   Type   Cat.   Pwr.   Acc.   PP  Sw Sh EP BD SP Skitter Smack Bug Physical 70 90% 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 Move Tutor moves from other generations

By a prior evolution

Generation VIII Other generations: IV - V - VI - VII - IX

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

By transfer from another generation

Generation VIII Other generations: V - VI - VII - IX

Gen.   Move   Type   Cat.   Pwr.   Acc.   PP  IV V VI VII Block Normal Status 0000— 00—}}—% 5 IV V VI VII Captivate × Normal Status 0000— 100}}100% 20 IV V VI VII Confide Normal Status 0000— 00—}}—% 20 IV V VI VII Double Team Normal Status 0000— 00—}}—% 15 IV V VI VII Fissure Ground Physical 0000— 030}}30% 5 IV V VI VII Flash × Normal Status 0000— 100}}100% 20 IV V VI VII Frustration × Normal Physical 0000— 100}}100% 20 IV V VI VII Headbutt Normal Physical 07070 100}}100% 15 IV V VI VII Hidden Power × Normal Special 06060 100}}100% 15 IV V VI VII Infestation Bug Special 02020 100}}100% 20 IV V VI VII Mud Bomb × Ground Special 06565 085}}85% 10 IV V VI VII Mud Sport × Ground Status 0000— 00—}}—% 15 IV V VI VII Natural Gift × Normal Physical 0000— 100}}100% 15 IV V VI VII Pain Split Normal Status 0000— 00—}}—% 20 IV V VI VII Return × Normal Physical 0000— 100}}100% 20 IV V VI VII Rock Smash Fighting Physical 04040 100}}100% 15 IV V VI VII Secret Power × Normal Physical 07070 100}}100% 20 IV V VI VII Strength Normal Physical 08080 100}}100% 15 IV V VI VII String Shot Bug Status 0000— 095}}95% 40 IV V VI VII Swagger Normal Status 0000— 085}}85% 15 IV V VI VII Toxic Poison Status 0000— 090}}90% 10 IV V VI VII Trump Card × Normal Special 0000— 00—}}—% 5

Transferred Pokémon only retain these moves in Pokémon Sword and Shield A striped background indicates a generation in which the move can only be obtained via event or as a special move 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 × indicates a move that cannot be used in Sword and Shield Click on the generation numbers at the top to see transfer-only moves for other generations

Side game data

West Sea

Pokémon Mystery Dungeon Explorers of Time, Explorers of Darkness, and Explorers of Sky Body size: 1 Recruit rate: 8.2% IQ group: E
Pokémon Ranger: Shadows of Almia Group: Water Poké Assist: Water Field move: (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 Field move: (present) (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 Walking Speed: 2.33 seconds Base HP: 61 Base Attack: 78 Base Defense: 54 Base Speed: 60
Pokémon Battle Trozei Water Attack Power: ★★★★★			Pokémon Shuffle Water Attack Power: 60 - 105 5 #529 Power of 5 Increases damage when you make a match of five.
Pokémon GO 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 Body size: 1 Recruit rate: 8.2% IQ group: E
Pokémon Rumble Attack ●●● Defense ●●● Speed ●●●			Pokémon Rumble Blast Attack ●●● Defense ●●● Speed ●●●
Pokémon Rumble Rush Walking Speed: 2.33 seconds Base HP: 61 Base Attack: 78 Base Defense: 54 Base Speed: 60
Pokémon Battle Trozei Water Attack Power: ★★★★★			Pokémon Shuffle Ground Attack Power: 60 - 105 5 #529 Swap+ Sometimes replaces three disruptions with this Pokémon.
Pokémon GO 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×

Evolution

West Sea

West Sea Unevolved Shellos  Water

Level 30 →

West Sea First Evolution Gastrodon  Water  Ground

East Sea

East Sea Unevolved Shellos  Water

Level 30 →

East Sea First Evolution Gastrodon  Water  Ground

Sprites

This Pokémon was unavailable prior to Generation IV.
Generation IV Diamond Pearl Platinum HeartGold SoulSilver Front Back Front Back Front Back
Generation V Black White Black 2 White 2 Front Back Front Back
Generation VI X Y Omega Ruby Alpha Sapphire Front Back Front Back
Generation VII Sun Moon Ultra Sun Ultra Moon Front Back Front Back
Generation VIII Sword Shield

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 Ken Sugimori, Shellos and Gastrodon were originally intended for Pokémon Ruby and Sapphire, but they were ultimately not implemented due to time constraints.
• 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 Mt. Coronet.
• Prior to Generation VI, Gastrodon's shape was .
• 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.

Origin

Gastrodon is based on a sea slug, 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.

Name origin

Gastrodon is a combination of gastropod and don (Spanish for lord). It may also derive from Gastropteron, a genus of sea slug.

Tritodon is a combination of from Tritoniidae or Triton (referring to either the common name of the gastropod genus Charonia) or the aquatic Greek god and don. It may also involve the word torito (Spanish for little bull, referring to its appearance).

In other languages

Language Title Meaning Japanese トリトドン Tritodon From Tritoniidae or Triton (referring to either the aquatic Greek god or the common name of the gastropod genus Charonia) and don. May also involve the word torito (Spanish for little bull) French Tritosor From Triton and saurus Spanish Gastrodon Same as English name German Gastrodon Same as English name Italian Gastrodon Same as English name Korean 트리토돈 Tritodon Transliteration of Japanese name Mandarin Chinese 海牛獸 Hǎi Niú Shòu Literally "Manatee beast" Cantonese Chinese

More languages Thai ไทรโทดอน Thraithodon Transcription of Japanese name

West Sea Language Title Japanese にしのうみ West Sea Chinese Cantonese 西海 Sāihói Mandarin 西海 Xīhǎi French Mer Occident German Westliches Meer Italian Mare Ovest Korean 서쪽바다 West Sea Portuguese Brazil Mar Ocidental* Mar Oeste* Portugal Mar Oeste Spanish Mar Oeste Thai ทะเลตะวันตก

East Sea Language Title Japanese ひがしのうみ East Sea Chinese Cantonese 東海 Dūnghói Mandarin 东海 Dōnghǎi French Mer Orient German Östliches Meer Italian Mare Est Korean 동쪽바다 East Sea Portuguese Mar Leste Spanish Mar Este Thai ทะเลตะวันออก

Related articles

• Zoey's Gastrodon
• List of Pokémon with form differences

External links

← #422: Shellos

Pokémon

#424: Ambipom →

This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon species, as well as Pokémon groups and forms.