Shellos

#422 in the HeartGold & SoulSilver Pokédex • Sea Slug Pokémon

Shellos

#422 in the HeartGold & SoulSilver Pokédex • Sea Slug Pokémon

Stats

Base stat spread shown as a hex chart and supporting stat bars.

Min

Max

262

356

Attack

214

Defense

214

Sp. Atk

107

234

Sp. Def

116

245

Speed

183

Total

325

Ranges are for Level 100. Max assumes a beneficial nature, 252 EVs, and 31 IVs; min assumes a hindering nature, 0 EVs, and 0 IVs.

Cherrim

Gastrodon

Normal

Shiny

Shellos

Sea Slug Pokémon

#422

Height

0.3 m (1'00")

Weight

6.3 kg (13.9 lbs)

Abilities

Sticky Hold Storm Drain

It's Super Effective

Damage multipliers Shellos takes from each attacking type, sorted from worst weakness to best resistance.

Weak to

2×

2×

Resists

0.5×

0.5×

0.5×

Growth

EV yield, catch rate, and experience details for this Pokémon.

Pokédexes	-
EV yield	1 HP
Catch rate	190
Base Exp.	65

Eggs

Egg groups, gender ratio, and hatching details for this Pokémon.

Egg Groups	Water 1 Amorphous
Gender	50% male 50% female
Egg cycles	20 (5,120 steps)

Lore

Version-specific Pokédex entries for this Pokémon.

HeartGold

Its shape and coloration vary, depending on its habitat.

SoulSilver

Its shape and coloration vary, depending on its habitat.

Evolution

Evolution requirements shown in a compact table or chain view.

Pokémon	Requires	Evolution
Shellos #422	Level 30	Gastrodon #423

Moves

Moves this Pokémon learns naturally by reaching specific levels.

		Class				Description
Start	Mud-Slap	Special	20	100	10	The user hurls mud in the foe’s face to inflict damage and lower its accuracy.
2	Mud Sport	Status	-	-	15	The user covers itself with mud. It weakens Electric- type moves while the user is in the battle.
4	Harden	Status	-	-	30	The user stiffens all the muscles in its body to raise its Defense stat.
7	Water Pulse	Special	60	100	20	The user attacks the foe with a pulsing blast of water. It may also confuse the foe.
11	Mud Bomb	Special	65	85	10	The user launches a hard-packed mud ball to attack. It may also lower the target’s accuracy.
16	Hidden Power	Special	1	100	15	A unique attack that varies in type and intensity depending on the Pokémon using it.
22	Rain Dance	Status	-	-	5	The user summons a heavy rain that falls for five turns, powering up Water- type moves.
29	Body Slam	Physical	85	100	15	The user drops onto the foe with its full body weight. It may leave the foe paralyzed.
37	Muddy Water	Special	95	85	10	The user attacks by shooting out muddy water. It may also lower the foe’s accuracy.
46	Recover	Status	-	-	5	A self-healing move. The user restores its own HP by up to half of its max HP.

Machines

Moves this Pokémon can learn from Technical Machines and Hidden Machines in Pokémon HeartGold and SoulSilver.

		Class				Description
TM03	Water Pulse	Special	60	100	20	The user attacks the foe with a pulsing blast of water. It may also confuse the foe.
TM06	Toxic	Status	-	85	10	A move that leaves the target badly poisoned. Its poison damage worsens every turn.
TM07	Hail	Status	-	-	10	The user summons a hailstorm lasting five turns. It damages all Pokémon except the Ice type.
TM10	Hidden Power	Special	1	100	15	A unique attack that varies in type and intensity depending on the Pokémon using it.
TM13	Ice Beam	Special	95	100	10	The foe is struck with an icy-cold beam of energy. It may also freeze the target solid.
TM14	Blizzard	Special	120	70	5	A howling blizzard is summoned to strike the foe. It may also freeze the target solid.
TM17	Protect	Status	-	-	10	It enables the user to evade all attacks. Its chance of failing rises if it is used in succession.
TM18	Rain Dance	Status	-	-	5	The user summons a heavy rain that falls for five turns, powering up Water- type moves.
TM21	Frustration	Physical	-	100	20	A full-power attack that grows more powerful the less the user likes its Trainer.
TM27	Return	Physical	-	100	20	A full-power attack that grows more powerful the more the user likes its Trainer.
TM32	Double Team	Status	-	-	15	By moving rapidly, the user makes illusory copies of itself to raise its evasiveness.
TM42	Facade	Physical	70	100	20	An attack move that doubles its power if the user is poisoned, paralyzed, or has a burn.
TM43	Secret Power	Physical	70	100	20	The user attacks with a secret power. Its added effects vary depending on the user’s environment.
TM44	Rest	Status	-	-	5	The user goes to sleep for two turns. It fully restores the user’s HP and heals any status problem.
TM45	Attract	Status	-	100	15	If it is the opposite gender of the user, the foe becomes infatuated and less likely to attack.
TM55	Brine	Special	65	100	10	If the foe’s HP is down to about half, this attack will hit with double the power.
TM58	Endure	Status	-	-	10	The user endures any attack with at least 1 HP. Its chance of failing rises if it is used in succession.
TM78	Captivate	Status	-	100	20	If it is the opposite gender of the user, the foe is charmed into sharply lowering its Sp. Atk stat.
TM82	Sleep Talk	Status	-	-	10	While it is asleep, the user randomly uses one of the moves it knows.
TM83	Natural Gift	Physical	-	100	15	The user draws power to attack by using its held Berry. The Berry determines its type and power.
TM87	Swagger	Status	-	90	15	The user enrages the foe into confusion. However, it also sharply raises the foe’s Attack stat.
TM90	Substitute	Status	-	-	10	The user makes a copy of itself using some of its HP. The copy serves as the user’s decoy.
HM03	Surf	Special	95	100	15	It swamps the entire battlefield with a giant wave. It can also be used for crossing water.
HM05	Whirlpool	Special	15	70	15	Traps the foe inside a whirlpool that lasts for two to five turns. The user can pass through whirlpools.

Tutors

Moves this Pokémon can learn from move tutors in this game.

	Class				Description
Ancient Power	Special	60	100	5	The user attacks with a prehistoric power. It may also raise all the user’s stats at once.
Dive	Physical	80	100	10	A two-turn attack. The user dives underwater on the first turn, then hits on the next turn.
Earth Power	Special	90	100	10	The user makes the ground under the foe erupt with power. It may also lower the target’s Sp. Def.
Headbutt	Physical	70	100	15	The user attacks with its head. It may make the foe flinch. To find Pokémon, hit trees.
Icy Wind	Special	55	95	15	The user attacks with a gust of chilled air. It also lowers the target’s Speed stat.
Mud-Slap	Special	20	100	10	The user hurls mud in the foe’s face to inflict damage and lower its accuracy.
Pain Split	Status	-	-	20	The user adds its HP to the foe’s HP, then equally shares the combined HP with the foe.
Snore	Special	40	100	15	An attack that can be used only if the user is asleep. The harsh noise may also make the foe flinch.
String Shot	Status	-	95	40	The foe is bound with silk blown from the user’s mouth. It reduces the target’s Speed stat.

Breeding

Moves this Pokémon can inherit through breeding or similar methods.

	Class				Description
Amnesia	Status	-	-	20	The user temporarily empties its mind to forget its concerns. It sharply raises the user’s Sp. Def stat.
Counter	Physical	-	100	20	A retaliation move that counters any physical attack, inflicting double the damage taken.
Curse	Status	-	-	10	A move that works differently for the Ghost type than for all the other types.
Fissure	Physical	-	30	5	The user opens up a fissure in the ground and drops the foe in. The target instantly faints if it hits.
Memento	Status	-	100	10	The user faints upon using this move. In return, it sharply lowers the target’s Attack and Sp. Atk.
Mirror Coat	Special	-	100	20	A retaliation move that counters any special attack, inflicting double the damage taken.
Sludge	Special	65	100	20	Unsanitary sludge is hurled at the foe. It may also poison the target.
Spit Up	Special	-	100	10	The power stored using the move Stockpile is released at once in an attack.
Stockpile	Status	-	-	20	The user charges up power, and raises both its Defense and Sp. Def. The move can be used three times.
Swallow	Status	-	-	10	The power stored using the move Stockpile is absorbed by the user to heal its HP.
Trump Card	Special	-	-	5	The fewer PP this move has, the more power it has for attack.
Yawn	Status	-	-	10	The user lets loose a huge yawn that lulls the foe into falling asleep on the next turn.