ShellosPokemon Monomyth Pokedex

Forms

These forms share Pokedex #160. Some form names and how to change between them are still unknown.

ShellosWaterShellos (Form 1)Water

In-game evolution chain

ShellosCurrent PokemonGastrodon

→

Shellos →

Gastrodon

Level up at level 30 or higher

Holding an Everstone or Eviolite prevents level-up evolutions.

These are the known evolution methods. Additional conditions may apply; story-based changes are not fully covered.

Moves Shellos learns as it levels up. Select a move to see its power and details.

Level, move, type, category, power, accuracy and PP

Level	Move	Type	Category	Power	Acc.	PP
1	Water Gun	Water	Special	40	100%	25
1	Mud-Slap	Ground	Special	20	100%	10
4	Mud Sport	Ground	Status	—	100%	15
8	Harden	Normal	Status	—	—	30
12	Water Pulse	Water	Special	60	100%	20
15	Mud Bomb	Ground	Special	65	85%	10
19	Hidden Power	Normal	Special	60	100%	15
23	AncientPower	Rock	Special	60	100%	5
26	Body Slam	Normal	Physical	85	100%	15
30	Recover	Normal	Status	—	—	5
34	Muddy Water	Water	Special	90	85%	10
37	Earth Power	Ground	Special	90	100%	10
41	Rain Dance	Water	Status	—	—	5
45	Memento	Dark	Status	—	100%	10

A dash means no fixed number is listed.

These TMs and HMs are compatible with Shellos. Their locations and story requirements are not yet covered.

Compatible TM or HM, move, type and category

Machine	Move	Type	Category
TM03	Watercolor	Water	Special
TM05	Infestation	Bug	Special
TM07	Hail	Ice	Status
TM08	Endure	Normal	Status
TM10	Hidden Power	Normal	Special
TM13	Aurora Beam	Ice	Special
TM17	Protect	Normal	Status
TM18	Rain Dance	Water	Status
TM19	Counter	Fighting	Physical
TM21	Swagger	Normal	Status
TM25	Purify	Poison	Status
TM26	Bulldoze	Ground	Physical
TM27	Return	Normal	Physical
TM32	Curse	Ghost	Status
TM37	Sandstorm	Rock	Status
TM39	Cragalanche	Rock	Physical
TM41	Substitute	Normal	Status
TM42	Reflect Type	Normal	Status
TM43	Secret Power	Normal	Physical
TM44	Rest	Psychic	Status
HM03	Surf	Water	Special
HM06	Waterfall	Water	Physical
HM07	Dive	Water	Physical

These are the family egg moves shown for Shellos in the game's Pokedex. Breeding access and which forms can hatch with these moves are not fully confirmed.

Move, type, category, power, accuracy and PP

Move	Type	Category	Power	Acc.	PP
Acid Armor	Poison	Status	—	—	20
Amnesia	Psychic	Status	—	—	20
Brine	Water	Special	65	100%	10
Clear Smog	Poison	Special	50	—	15
Fissure	Ground	Physical	1	30%	5
Mirror Coat	Psychic	Special	1	100%	20
Mist	Ice	Status	—	—	30
Sludge	Poison	Special	65	100%	20
Spit Up	Normal	Special	1	100%	10
Stockpile	Normal	Status	—	—	20
Swallow	Normal	Status	—	—	10
Trump Card	Normal	Special	1	—	5
Yawn	Normal	Status	—	—	10

Browse moves with family egg lists →

These moves are compatible with Shellos through a move tutor. Tutor locations, costs and access are not yet covered. A move already known cannot be taught again.

Move, type, category, power, accuracy and PP

Move	Type	Category	Power	Acc.	PP
Body Slam	Normal	Physical	85	100%	15
Earthquake	Ground	Physical	100	100%	10
Rock Slide	Rock	Physical	75	90%	10
Stealth Rock	Rock	Status	—	—	20
Blizzard	Ice	Special	110	70%	5
Double-Edge	Normal	Physical	120	100%	15
Sleep Talk	Normal	Status	—	—	10
Snore	Normal	Special	50	100%	15
South Wind	Ground	Special	60	100%	5
Icy Wind	Ice	Special	55	95%	15
Facade	Normal	Physical	70	100%	20

Browse tutor moves →

Locations & availability

These are Shellos's listed wild encounters. Reaching an area and meeting any additional conditions are not fully confirmed.

Base chances are within the named method and encounter group, before abilities or special effects. They are approximate, not a chance per step or cast. Additional conditions may apply.

• Route 15Surfing · Levels 29–33 · Base chance: ≈35%
• Route 15Good Rod · Levels 20–25 · Base chance: ≈20%
• Tranquil CreekSurfing · Levels 29–32 · Base chance: ≈35%
• Tranquil CreekGood Rod · Levels 20–25 · Base chance: ≈20%
• Cascade City · encounter list 1Surfing · Levels 31–37 · Base chance: ≈34%
• Cascade City · encounter list 1Good Rod · Levels 20–25 · Base chance: ≈20%
• Quiet ValleyOld Rod · Levels 10–15 · Base chance: ≈30%
• Quiet ValleyGood Rod · Levels 20–25 · Base chance: ≈20%
• Camp TarragonOld Rod · Levels 10–15 · Base chance: ≈30%
• Mt. Thunder · encounter list 4Old Rod · Levels 10–15 · Base chance: ≈30%
• Mt. Thunder · encounter list 4Good Rod · Levels 20–25 · Base chance: ≈20%
• Mt. Thunder · encounter list 7Old Rod · Levels 10–15 · Base chance: ≈30%
• Mt. Thunder · encounter list 7Good Rod · Levels 20–25 · Base chance: ≈20%
• Route 24Old Rod · Levels 10–15 · Base chance: ≈30%
• Route 25 · encounter list 1Old Rod · Levels 10–15 · Base chance: ≈30%
• Route 26 · encounter list 1Old Rod · Levels 10–15 · Base chance: ≈30%
• Victory Ruin · encounter list 1Old Rod · Levels 10–15 · Base chance: ≈30%
• Chamomile TownOld Rod · Levels 10–15 · Base chance: ≈30%
• Victory Ruin · encounter list 4Old Rod · Levels 10–15 · Base chance: ≈30%
• Victory Ruin · encounter list 3Old Rod · Levels 10–15 · Base chance: ≈30%
• Victory Ruin · encounter list 6Old Rod · Levels 10–15 · Base chance: ≈30%
• Victory Ruin · encounter list 7Old Rod · Levels 10–15 · Base chance: ≈30%
• Victory Ruin · encounter list 11Old Rod · Levels 10–15 · Base chance: ≈30%
• Victory Ruin · encounter list 12Old Rod · Levels 10–15 · Base chance: ≈30%
• Route 27 · encounter list 1Old Rod · Levels 10–15 · Base chance: ≈30%
• Old Bay Island · encounter list 5Surfing · Levels 20–60 · Base chance: ≈60%
• Old Bay Island · encounter list 5Old Rod · Levels 10–15 · Base chance: ≈30%
• Old Bay Island · encounter list 5Good Rod · Levels 15–40 · Base chance: ≈20%
• His Trail · encounter list 2Surfing · Levels 20–60 · Base chance: ≈60%
• His Trail · encounter list 2Old Rod · Levels 10–15 · Base chance: ≈30%
• His Trail · encounter list 2Good Rod · Levels 15–40 · Base chance: ≈20%
• Route 26 · encounter list 2Old Rod · Levels 10–15 · Base chance: ≈30%
• Old Bay Caves · encounter list 4Surfing · Levels 30–60 · Base chance: ≈30%

Wild encounters do not cover every way to obtain a Pokemon. Gifts, trades and other special encounters are not fully covered. Browse all wild locations →