Gastrodon

Contents
Info
Base stats
Evolution chart
Pokédex entries
Moves learned
Sprites
Locations
Language

Gastrodon is a Water/Ground type Pokémon introduced in Generation 4. It is known as the Sea Slug Pokémon.

Pokédex data

National №	423
Type	Water Ground
Species	Sea Slug Pokémon
Height	0.9 m (2′11″)
Weight	29.9 kg (65.9 lbs)
Abilities	1. Sticky Hold 2. Storm Drain Sand Force (hidden ability)
Local №	061 (Diamond/Pearl) 061 (Platinum) 261 (Sun/Moon — Alola dex) 342 (U.Sun/U.Moon — Alola dex) 231 (Sword/Shield)

Training

EV yield	2 HP
Catch rate	75 (9.8% with PokéBall, full HP)
Base Friendship	70 (normal)
Base Exp.	166
Growth Rate	Medium Fast

Breeding

Egg Groups	Amorphous, Water 1
Gender	50% male, 50% female
Egg cycles	20 (4,884–5,140 steps)

Base stats

HP	111	332	426
Attack	83	153	291
Defense	68	126	258
Sp. Atk	92	170	311
Sp. Def	82	152	289
Speed	39	74	194
Total	475	Min	Max

The ranges shown on the right are for a level 100 Pokémon. Maximum values are based on a beneficial nature, 252 EVs, 31 IVs; minimum values are based on a hindering nature, 0 EVs, 0 IVs.

Type defenses

The effectiveness of each type on Gastrodon.

Sticky Hold ability Storm Drain ability Sand Force ability

Nor	Fir	Wat	Ele	Gra	Ice	Fig	Poi	Gro
	½		0	4			½

Fly	Psy	Bug	Roc	Gho	Dra	Dar	Ste	Fai
			½				½

Nor	Fir	Wat	Ele	Gra	Ice	Fig	Poi	Gro
	½	0	0	4			½

Fly	Psy	Bug	Roc	Gho	Dra	Dar	Ste	Fai
			½				½

Nor	Fir	Wat	Ele	Gra	Ice	Fig	Poi	Gro
	½		0	4			½

Fly	Psy	Bug	Roc	Gho	Dra	Dar	Ste	Fai
			½				½

Evolution chart

#422
Shellos
Water

(Level 30)

#423
Gastrodon
Water · Ground

Gastrodon changes

In Generation 4, Gastrodon has a base experience yield of 176.

Pokédex entries

Gastrodon

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 SoulSilver	When its natural enemy attacks, it oozes purple fluid and escapes.
Black White Black 2 White 2	Long ago, its entire back was shielded with a sturdy shell. There are traces of it left in its cells.
X Omega Ruby	When its natural enemy attacks, it oozes purple fluid and escapes.
Y Alpha Sapphire	It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.

East Sea Form

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.
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 Form

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.
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.

Moves learned by Gastrodon

In other generations
4
5
6
7
8

Sword/Shield Ultra Sun/Ultra Moon

Moves learnt by level up

Gastrodon learns the following moves in Pokémon Sword & Shield at the levels specified.

Lv.	Move	Type	Power	Acc.
1	Harden	Normal	—	—
1	Mud-Slap	Ground	20	100
1	Recover	Normal	—	—
1	Water Gun	Water	40	100
15	Water Pulse	Water	60	100
20	Ancient Power	Rock	60	100
25	Body Slam	Normal	85	100
33	Muddy Water	Water	90	85
39	Earth Power	Ground	90	100
46	Rain Dance	Water	—	—
53	Memento	Dark	—	100

Egg moves

Gastrodon does not learn any moves by breeding in Pokémon Sword & Shield.

Moves learnt by TM

Gastrodon is compatible with these Technical Machines in Pokémon Sword & Shield:

TM	Move	Type	Power	Acc.
08	Hyper Beam	Normal	150	90
09	Giga Impact	Normal	150	90
15	Dig	Ground	80	100
21	Rest	Psychic	—	—
22	Rock Slide	Rock	75	90
24	Snore	Normal	50	100
25	Protect	Normal	—	—
27	Icy Wind	Ice	55	95
31	Attract	Normal	—	100
32	Sandstorm	Rock	—	—
33	Rain Dance	Water	—	—
35	Hail	Ice	—	—
36	Whirlpool	Water	35	85
39	Facade	Normal	70	100
45	Dive	Water	80	100
46	Weather Ball	Normal	50	100
48	Rock Tomb	Rock	60	95
49	Sand Tomb	Ground	35	85
53	Mud Shot	Ground	55	95
55	Brine	Water	65	100
76	Round	Normal	60	100
81	Bulldoze	Ground	60	100
98	Stomping Tantrum	Ground	75	100

Moves learnt by TR

Gastrodon is compatible with these Technical Records in Pokémon Sword & Shield:

TR	Move	Type	Power	Acc.
01	Body Slam	Normal	85	100
03	Hydro Pump	Water	110	80
04	Surf	Water	90	100
05	Ice Beam	Ice	90	100
06	Blizzard	Ice	110	70
10	Earthquake	Ground	100	100
16	Waterfall	Water	80	100
17	Amnesia	Psychic	—	—
20	Substitute	Normal	—	—
22	Sludge Bomb	Poison	90	100
26	Endure	Normal	—	—
27	Sleep Talk	Normal	—	—
45	Muddy Water	Water	90	85
67	Earth Power	Ground	90	100
75	Stone Edge	Rock	100	80
78	Sludge Wave	Poison	95	100
84	Scald	Water	80	100

Moves learnt by level up

Gastrodon learns the following moves in Pokémon Ultra Sun & Ultra Moon at the levels specified.

Lv.	Move	Type	Power	Acc.
1	Harden	Normal	—	—
1	Mud-Slap	Ground	20	100
1	Mud Sport	Ground	—	—
1	Water Pulse	Water	60	100
2	Mud Sport	Ground	—	—
4	Harden	Normal	—	—
7	Water Pulse	Water	60	100
11	Mud Bomb	Ground	65	85
16	Hidden Power	Normal	60	100
22	Rain Dance	Water	—	—
29	Body Slam	Normal	85	100
41	Muddy Water	Water	90	85
54	Recover	Normal	—	—

Egg moves

Gastrodon learns the following moves via breeding in Pokémon Ultra Sun & Ultra Moon. Details and compatible parents can be found on the Gastrodon egg moves page.

Move	Type	Power	Acc.
Acid Armor	Poison	—	—
Amnesia	Psychic	—	—
Brine	Water	65	100
Clear Smog	Poison	50	—
Counter	Fighting	—	100
Curse	Ghost	—	—
Fissure	Ground	—	—
Memento	Dark	—	100
Mirror Coat	Psychic	—	100
Mist	Ice	—	—
Sludge	Poison	65	100
Spit Up	Normal	—	100
Stockpile	Normal	—	—
Swallow	Normal	—	—
Trump Card	Normal	—	∞
Yawn	Normal	—	—

Move Tutor moves

Gastrodon can be taught these attacks in Pokémon Ultra Sun & Ultra Moon from move tutors (details):

Move	Type	Power	Acc.
Block	Normal	—	—
Earth Power	Ground	90	100
Icy Wind	Ice	55	95
Pain Split	Normal	—	—
Snore	Normal	50	100
Stomping Tantrum	Ground	75	100
Water Pulse	Water	60	100

Moves learnt by TM

Gastrodon is compatible with these Technical Machines in Pokémon Ultra Sun & Ultra Moon:

TM	Move	Type	Power	Acc.
06	Toxic	Poison	—	90
07	Hail	Ice	—	—
10	Hidden Power	Normal	60	100
13	Ice Beam	Ice	90	100
14	Blizzard	Ice	110	70
15	Hyper Beam	Normal	150	90
17	Protect	Normal	—	—
18	Rain Dance	Water	—	—
21	Frustration	Normal	—	100
26	Earthquake	Ground	100	100
27	Return	Normal	—	100
32	Double Team	Normal	—	—
34	Sludge Wave	Poison	95	100
36	Sludge Bomb	Poison	90	100
37	Sandstorm	Rock	—	—
39	Rock Tomb	Rock	60	95
42	Facade	Normal	70	100
44	Rest	Psychic	—	—
45	Attract	Normal	—	100
48	Round	Normal	60	100
55	Scald	Water	80	100
68	Giga Impact	Normal	150	90
71	Stone Edge	Rock	100	80
78	Bulldoze	Ground	60	100
80	Rock Slide	Rock	75	90
83	Infestation	Bug	20	100
87	Swagger	Normal	—	85
88	Sleep Talk	Normal	—	—
90	Substitute	Normal	—	—
94	Surf	Water	90	100
98	Waterfall	Water	80	100
100	Confide	Normal	—	—

Transfer-only moves

Gastrodon can only learn these moves in previous generations. It must be taught the moves in the appropriate game and then transferred to Pokémon Ultra Sun & Ultra Moon.

Move	Type	Power	Acc.	Method
Captivate	Normal	—	100	Generation 4 — TM
Endure	Normal	—	—	Generation 4 — TM
Natural Gift	Normal	—	100	Generation 4 — TM
Whirlpool	Water	35	85	Generation 4 — HM
Ancient Power	Rock	60	100	Generation 4 — Move tutor
Headbutt	Normal	70	100	Generation 4 — Move tutor
String Shot	Bug	—	95	Generation 4 — Move tutor
Dig	Ground	80	100	Generation 6 — TM
Flash	Normal	—	100	Generation 6 — TM
Rock Smash	Fighting	40	100	Generation 6 — TM
Secret Power	Normal	70	100	Generation 6 — TM
Dive	Water	80	100	Generation 6 — HM
Strength	Normal	80	100	Generation 6 — HM

In other generations
4
5
6
7
8

Gastrodon sprites

Type	Generation 4	Generation 5	Generation 6	Generation 7	Generation 8
Normal					—
Shiny					—

See all Gastrodon sprites

Where to find Gastrodon

Diamond Pearl	Route 218, 221, 222, 224, 230, Fuego Ironworks
Platinum	Route 205, 212, 213, 218, 224, Canalave City, Fuego Ironworks, Pastoria City, Valley Windworks
HeartGold SoulSilver	Trade/migrate from another game
Black White Black 2 White 2	Trade/migrate from another game
X Y	Trade/migrate from another game
Omega Ruby Alpha Sapphire	Evolve Shellos
Sun Moon	Poni Wilds, Ancient Poni Path, Exeggutor Island
Ultra Sun Ultra Moon	Poni Wilds, Ancient Poni Path, Poni Breaker Coast, Exeggutor Island
Let's Go Pikachu Let's Go Eevee	Trade/migrate from another game
Sword Shield	Route 9

Answers to Gastrodon questions

Other languages

English	Gastrodon
Japanese	トリトドン (Tritodon)
German	Gastrodon
French	Tritosor

Name origin

gastropod: set of creatures including snails, whelks and slugs
don: of great size/importance; lord or master