No. 160 Returning · National Dex No. 422

Shellos

Sea Slug Pokémon

Water

Height: 0.3 m (1′00″)
Weight: 6.3 kg (13.9 lb)
Gender: 50% male · 50% female
Catch rate: 190 of 255
Growth rate: Medium Slow
Egg groups: Water 1 Amorphous
Egg cycles: 20
Base friendship: 70
EV yield: 1 HP

Abilities

Sticky HoldPrevents others from removing its item.
Storm DrainDraws Water moves to instead boost Sp. Atk.
Sand Force, hidden abilityUps Rock, Ground & Steel moves in sandstorm.

The slime trail a Shellos leaves behind is known to promote algal blooms. The color of algae can shift near the sea the Shellos live by.

Base stats

Total325

The species’ own values, before level, training or nature. Bars end at 200.

Changed in Monomyth

Same types and base stats as in the main games (National Dex No. 422).

Evolution

No. 160ShellosWater
1. Level 30
  No. 161GastrodonWaterGround

Where to find it

Where	How	Levels	Chance
Battle Frontier form 2 form	Old Rod	Lv 10–15	30%
Camp Tarragon	Old Rod	Lv 10–15	30%
Cascade City	Good Rod	Lv 20–25	20%
Cascade City	Surfing	Lv 31–37	34%
Chamomile Town	Old Rod	Lv 10–15	30%
Elysium Base form 2 form	Old Rod	Lv 10–15	30%
His Trail	Good Rod	Lv 15–40	20%
His Trail	Old Rod	Lv 10–15	30%
His Trail	Surfing	Lv 20–60	60%
Mandrake City form 2 form	Good Rod	Lv 20–25	60%
Mandrake City form 2 form	Old Rod	Lv 10–15	30%
Mt. Thunder	Good Rod	Lv 20–25	20%
Mt. Thunder	Old Rod	Lv 10–15	30%
Oasis Cave form 2 form	Good Rod	Lv 20–25	20%
Old Bay Caves	Surfing	Lv 30–60	30%
Old Bay Coast form 2 form	Old Rod	Lv 10–15	30%
Old Bay Island	Good Rod	Lv 15–40	20%
Old Bay Island	Old Rod	Lv 10–15	30%
Old Bay Island form 2 form	Old Rod	Lv 10–15	30%
Old Bay Island	Surfing	Lv 20–60	60%
Old Bay Island form 2 form	Surfing	Lv 20–60	60%
Overgrown Oasis form 2 form	Good Rod	Lv 20–25	40%
Overgrown Oasis form 2 form	Surfing	Lv 20–28	100%
Port Ginseng form 2 form	Old Rod	Lv 10–15	30%
Port Ginseng Docks form 2 form	Old Rod	Lv 10–15	30%
Quiet Valley	Good Rod	Lv 20–25	20%
Quiet Valley	Old Rod	Lv 10–15	30%
Reservoir Tunnel form 2 form	Good Rod	Lv 20–25	20%
Route 12 form 2 form	Grass	Lv 20–24	up to 45%
Route 12 form 2 form	Old Rod	Lv 10–15	30%
Route 12 form 2 form	Surfing	Lv 23–28	60%
Route 15	Good Rod	Lv 20–25	20%
Route 15	Surfing	Lv 29–33	35%
Route 24	Old Rod	Lv 10–15	30%
Route 25	Old Rod	Lv 10–15	30%
Route 26	Old Rod	Lv 10–15	30%
Route 27	Old Rod	Lv 10–15	30%
Route 27 form 2 form	Old Rod	Lv 10–15	30%
Route 28 form 2 form	Old Rod	Lv 10–15	30%
Route 30 form 2 form	Old Rod	Lv 10–15	30%
Solace Point form 2 form	Old Rod	Lv 10–15	30%
Tranquil Creek	Good Rod	Lv 20–25	20%
Tranquil Creek	Surfing	Lv 29–32	35%
Victory Ruin	Old Rod	Lv 10–15	30%

Moves

50 in all

Level up 14

Lv	Move	Category	Pow	Acc	PP
1	Mud-Slap, Ground-typeThe user hurls mud in the target’s face to inflict damage and lower its Accuracy.	Special	20	100%	10
1	Water Gun, Water-typeThe target is blasted with a forceful shot of water.	Special	40	100%	25
4	Mud Sport, Ground-typeThe user kicks up mud on the field, reducing all Electric-type damage by 70% for 5 turns.	Status	—	—	15
8	Harden, Normal-typeThe user stiffens all the muscles in its body to boost its Defense stat.	Status	—	—	30
12	Water Pulse, Water-typeThe user launches pulses of water at the target. It has a 20% chance of confusing.	Special	60	100%	20
15	Mud Bomb, Ground-typeThe user fires a hard-packed mud ball at the target. Has a 30% chance to lower Accuracy.	Special	65	85%	10
19	Hidden Power, Normal-typeA unique attack that varies in type depending on the Pokémon using it.	Special	60	100%	15
23	Ancient Power, Rock-typeThe user attacks with a prehistoric power. It has a 10% chance of boosting all its stats.	Special	60	100%	5
26	Body Slam, Normal-typeThe user drops onto the target with its full body weight. Has a 30% chance to paralyze.	Physical	85	100%	15
30	Recover, Normal-typeRestoring its own cells, the user restores its own HP by 50% of its maximum HP.	Status	—	—	5
34	Muddy Water, Water-typeThe user floods opposing Pokémon with muddy water. Has a 10% chance to lower Accuracy.	Special	90	85%	10
37	Earth Power, Ground-typeThe user wildly erupts the ground under the target. Has a 10% chance to lower Sp. Def.	Special	90	100%	10
41	Rain Dance, Water-typeSummons rain for 5 turns, which boosts Water attacks by 50% & halves Fire attack damage.	Status	—	—	5
45	Memento, Dark-typeThe user faints, and then harshly lowers the target’s Atk and Sp. Atk stats.	Status	—	100%	10

TM and HM 23

TM	Move	Category	Pow	Acc	PP
TM03	Watercolor, Water-typeShoots water imbued with its true colors. The effect depends on its first non-Water-type.	Special	70	100%	10
TM05	Infestation, Bug-typeThe target is infested for 4-5 turns. It deals damage each turn and prevents escape.	Special	20	100%	20
TM07	Hail, Ice-typeSummons a hailstorm that lasts 5 turns. Every turn, it damages all non-Ice-types.	Status	—	—	10
TM08	Endure, Normal-typeThe user endures any attack with at least 1 HP. It may fail if used in succession.	Status	—	—	10
TM10	Hidden Power, Normal-typeA unique attack that varies in type depending on the Pokémon using it.	Special	60	100%	15
TM13	Aurora Beam, Ice-typeHits the target with a rainbow-colored beam with a 50% chance to lower its Attack stat.	Special	65	100%	20
TM17	Protect, Normal-typeThe user protects itself from incoming moves. It may fail if used in succession.	Status	—	—	10
TM18	Rain Dance, Water-typeSummons rain for 5 turns, which boosts Water attacks by 50% & halves Fire attack damage.	Status	—	—	5
TM19	Counter, Fighting-typeThe user retaliates against the last physical attack this turn, dealing double its damage.	Physical	—	100%	20
TM21	Swagger, Normal-typeThe user enrages and confuses the target, but also sharply boosts the target’s Attack.	Status	—	85%	15
TM25	Purify, Poison-typeBy purifying the target of status conditions, the user restores its HP by 50% of its max HP.	Status	—	—	20
TM26	Bulldoze, Ground-typeThe user stomps down on the ground, damaging & lowering the Speed of everyone around it.	Physical	60	100%	20
TM27	Return, Normal-typeA full-power attack that grows more powerful the more the user likes its Trainer.	Physical	—	100%	20
TM32	Curse, Ghost-typeA move that works differently for the Ghost-type than for all other types.	Status	—	—	10
TM37	Sandstorm, Rock-typeSummons a 5-turn sandstorm, damaging all Pokémon except Rock, Ground & Steel-types.	Status	—	—	10
TM39	Cragalanche, Rock-typeAttacks opposing Pokémon after most moves. Power doubles if hit by the target that turn.	Physical	60	100%	10
TM41	Substitute, Normal-typeCreates a decoy using 25% of its HP, which absorbs attack damage and many status moves.	Status	—	—	10
TM42	Reflect Type, Normal-typeThe user reflects all of the target’s types, making the user’s types equal the target’s.	Status	—	—	15
TM43	Secret Power, Normal-typeAn attack whose added effects depend on the terrain. Can be used to make a Secret Base.	Physical	70	100%	20
TM44	Rest, Psychic-typeThe user sleeps for 2 turns, fully restoring its HP and healing any status conditions.	Status	—	—	5
HM03	Surf, Water-typeA big wave crashes down on all opposing Pokémon. It can also be used to cross water.	Special	70	100%	15
HM06	Waterfall, Water-typeA rapid-charging attack with a 20% chance to flinch. Can also be used to climb waterfalls.	Physical	70	100%	15
HM07	Dive, Water-typeThe user dives underwater, attacking on the 2nd turn. Can be used to dive in deep waters.	Physical	80	100%	10

Egg moves 13

	Move	Category	Pow	Acc	PP
Egg	Acid Armor, Poison-typeThe user alters its cells to liquify itself, sharply boosting its Defense stat.	Status	—	—	20
Egg	Amnesia, Psychic-typeThe user briefly empties its mind to forget its concerns, sharply boosting its Sp. Def.	Status	—	—	20
Egg	Brine, Water-typeThe user rains salty brine at the target. Its power doubles on a target at 50% HP or less.	Special	65	100%	10
Egg	Clear Smog, Poison-typeThe user throws a special clump of mud at the target, resetting all its stat changes.	Special	50	—	15
Egg	Fissure, Ground-typeThe user opens a fissure beneath the target. If it hits, the target faints instantly.	Physical	—	30%	5
Egg	Mirror Coat, Psychic-typeThe user retaliates against the last special attack this turn, dealing double its damage.	Special	—	100%	20
Egg	Mist, Ice-typeFor 5 turns, the user’s team cannot have their stats lowered by other Pokémon.	Status	—	—	30
Egg	Sludge, Poison-typeUnsanitary sludge is hurled at the target. It has a 30% chance of poisoning the target.	Special	65	100%	20
Egg	Spit Up, Normal-typeReleases power stored by the move Stockpile. Each stockpile boosts the move’s power.	Special	—	100%	10
Egg	Stockpile, Normal-typeFor up to 3 times, the user can charge up power to boost its Defense and Sp. Def stats.	Status	—	—	20
Egg	Swallow, Normal-typeAbsorbs power stored by the move Stockpile to heal HP. Storing more power heals more HP.	Status	—	—	10
Egg	Trump Card, Normal-typeThis move becomes stronger the lower its PP, becoming a trump card as it nears depletion.	Special	—	—	5
Egg	Yawn, Normal-typeThe user lets out a huge yawn that lulls the target into falling asleep on the next turn.	Status	—	—	10

Forms

Shellos · Usual form
Water
Sticky Hold Storm Drain Sand Force, hidden ability
- HP76
- Atk48
- Def48
- SpA57
- SpD62
- Spe34
- BST325
Shellos · Form 2
Water
Sticky Hold Storm Drain Sand Force, hidden ability
- HP76
- Atk48
- Def48
- SpA57
- SpD62
- Spe34
- BST325

Forms have no page of their own. They are labelled by what sets them apart, not by a name the game doesn’t give.

All sprites

Front

Back

Shiny front

Shiny back

Animation

The game’s own animation.

Details

Steps3
Length41 ticks of 1/60 second
Step 1Frame 1 for 8 ticks
Step 2Frame 2 for 25 ticks
Step 3Frame 1 for 8 ticks

Every frame 2

Frame 1used 2×

Frame 2used 1×

Coat Lab

2,754 possible coats

Usual colours, as in the Pokédex.

Quick guide 3 steps

Pick a coat for each colour group, with its odds. Strength slides the shift from 1 to 8.
Roll rolls a Pokémon’s coat the way the game does, from a random personality value.
Share the link holds the coat you made.

Colour group 1

Strength 1

Colour group 2

Strength 1

Colour group 3

Strength 1

The in-game “Color Variants” option turns coats off. A shiny never gets a coat.

Pokémon Monomyth is a free fan game by Team Monomyth (monomyth.jp): Pokémon design, spritework, monster sounds and battle design are theirs. DexDB is an unofficial fan site, not affiliated with the team, Nintendo, Game Freak, Creatures or The Pokémon Company, and hosts no game files.