Shellos
#341 in the Ultra Sun & Ultra Moon Pokédex • Sea Slug Pokémon
Ultra Sun
While they normally live in the sea, they can function on land, too, until their skin dries out.
Ultra Moon
When it senses danger, a purple liquid oozes out of it. The liquid is thought to be something like greasy sweat.
Pokédexes
Egg Group
Steps to Hatch
Effort Values Yielded
Gender Ratio
Capture Rate
Base Experience
| Pokémon | Requires | Evolution |
|---|---|---|
![]() Shellos #341 | Level 30 | ![]() Gastrodon #342 |
Ultra Moon
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Seafolk Village Seafolk Village Main | Npc Trade | 44 | 100% | - |
Ultra Sun
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Seafolk Village Seafolk Village Main | Npc Trade | 44 | 100% | - |

Normal

Shiny
Shellos
Sea Slug Pokémon

HP
76
Attack
48
Defense
48
Sp. Atk
57
Sp. Def
62
Speed
34
Total
325
Type Chart
Weaknesses
Takes 2× from


Resistances
Takes 0.5× from




| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Mud-Slap | ![]() | Special | 20 | 100 | 10 | The user hurls mud in the target’s face to inflict damage and lower its accuracy. |
| 2 | Mud Sport | ![]() | Status | - | - | 15 | The user kicks up mud on the battlefield. This weakens Electric-type moves for five turns. |
| 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 target with a pulsing blast of water. This may also confuse the target. |
| 11 | Mud Bomb | ![]() | Special | 65 | 85 | 10 | The user launches a hard-packed mud ball to attack. This may also lower the target’s accuracy. |
| 16 | Hidden Power | ![]() | Special | 60 | 100 | 15 | A unique attack that varies in type 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. It lowers the power of Fire-type moves. |
| 29 | Body Slam | ![]() | Physical | 85 | 100 | 15 | The user drops onto the target with its full body weight. This may also leave the target with paralysis. |
| 37 | Muddy Water | ![]() | Special | 90 | 85 | 10 | The user attacks by shooting muddy water at the opposing Pokémon. This may also lower their accuracy. |
| 46 | Recover | ![]() | Status | - | - | 5 | Restoring its own cells, the user restores its own HP by half of its max HP. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Acid Armor | ![]() | Status | - | - | 20 | The user alters its cellular structure to liquefy itself, sharply raising its Defense stat. |
| Amnesia | ![]() | Status | - | - | 20 | The user temporarily empties its mind to forget its concerns. This sharply raises the user’s Sp. Def stat. |
| Brine | ![]() | Special | 65 | 100 | 10 | If the target’s HP is half or less, this attack will hit with double the power. |
| Clear Smog | ![]() | Special | 50 | - | 15 | The user attacks by throwing a clump of special mud. All stat changes are returned to normal. |
| 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 other types. |
| Fissure | ![]() | Physical | - | 30 | 5 | The user opens up a fissure in the ground and drops the target in. The target faints instantly if this attack hits. |
| Memento | ![]() | Status | - | 100 | 10 | The user faints when using this move. In return, this harshly lowers the target’s Attack and Sp. Atk stats. |
| Mirror Coat | ![]() | Special | - | 100 | 20 | A retaliation move that counters any special attack, inflicting double the damage taken. |
| Mist | ![]() | Status | - | - | 30 | The user cloaks itself and its allies in a white mist that prevents any of their stats from being lowered for five turns. |
| Sludge | ![]() | Special | 65 | 100 | 20 | Unsanitary sludge is hurled at the target. This may also poison the target. |
| Spit Up | ![]() | Special | - | 100 | 10 | The power stored using the move Stockpile is released at once in an attack. The more power is stored, the greater the move’s power. |
| Stockpile | ![]() | Status | - | - | 20 | The user charges up power and raises both its Defense and Sp. Def stats. 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. Storing more power heals more HP. |
| Trump Card | ![]() | Special | - | - | 5 | The fewer PP this move has, the greater its power. |
| Yawn | ![]() | Status | - | - | 10 | The user lets loose a huge yawn that lulls the target into falling asleep on the next turn. |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| TM06 | Toxic | ![]() | Status | - | 90 | 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 | 60 | 100 | 15 | A unique attack that varies in type depending on the Pokémon using it. |
| TM13 | Ice Beam | ![]() | Special | 90 | 100 | 10 | The target is struck with an icy-cold beam of energy. This may also leave the target frozen. |
| TM14 | Blizzard | ![]() | Special | 110 | 70 | 5 | A howling blizzard is summoned to strike opposing Pokémon. This may also leave the opposing Pokémon frozen. |
| TM17 | Protect | ![]() | Status | - | - | 10 | 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. It lowers the power of Fire-type moves. |
| TM21 | Frustration | ![]() | Physical | - | 100 | 20 | This full-power attack grows more powerful the less the user likes its Trainer. |
| TM27 | Return | ![]() | Physical | - | 100 | 20 | This full-power attack 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 | This attack move doubles its power if the user is poisoned, burned, or paralyzed. |
| TM44 | Rest | ![]() | Status | - | - | 5 | The user goes to sleep for two turns. This fully restores the user’s HP and heals any status conditions. |
| TM45 | Attract | ![]() | Status | - | 100 | 15 | If it is the opposite gender of the user, the target becomes infatuated and less likely to attack. |
| TM48 | Round | ![]() | Special | 60 | 100 | 15 | The user attacks the target with a song. Others can join in the Round to increase the power of the attack. |
| TM55 | Scald | ![]() | Special | 80 | 100 | 15 | The user shoots boiling hot water at its target. This may also leave the target with a burn. |
| TM83 | Infestation | ![]() | Special | 20 | 100 | 20 | The target is infested and attacked for four to five turns. The target can’t flee during this time. |
| TM87 | Swagger | ![]() | Status | - | 85 | 15 | The user enrages and confuses the target. However, this also sharply raises the target’s Attack stat. |
| TM88 | Sleep Talk | ![]() | Status | - | - | 10 | While it is asleep, the user randomly uses one of the moves it knows. |
| TM90 | Substitute | ![]() | Status | - | - | 10 | The user makes a copy of itself using some of its HP. The copy serves as the user’s decoy. |
| TM94 | Surf | ![]() | Special | 90 | 100 | 15 | The user attacks everything around it by swamping its surroundings with a giant wave. |
| TM100 | Confide | ![]() | Status | - | - | 20 | The user tells the target a secret, and the target loses its ability to concentrate. This lowers the target’s Sp. Atk stat. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Earth Power | ![]() | Special | 90 | 100 | 10 | The user makes the ground under the target erupt with power. This may also lower the target’s Sp. Def stat. |
| Icy Wind | ![]() | Special | 55 | 95 | 15 | The user attacks with a gust of chilled air. This also lowers the opposing Pokémon’s Speed stats. |
| Pain Split | ![]() | Status | - | - | 20 | The user adds its HP to the target’s HP, then equally shares the combined HP with the target. |
| Snore | ![]() | Special | 50 | 100 | 15 | This attack can be used only if the user is asleep. The harsh noise may also make the target flinch. |
| Water Pulse | ![]() | Special | 60 | 100 | 20 | The user attacks the target with a pulsing blast of water. This may also confuse the target. |
Sticky Hold
Ability Slot 1
Items held by the Pokémon are stuck fast and cannot be removed by other Pokémon.
Prevents a held item from being removed by other Pokémon.
Storm Drain
Ability Slot 2
Draws in all Water-type moves. Instead of being hit by Water-type moves, it boosts its Sp. Atk.
Redirects single-target Water moves to this Pokémon where possible. Absorbs Water moves, raising Special Attack one stage.
Sand Force
Hidden Ability
Boosts the power of Rock-, Ground-, and Steel-type moves in a sandstorm.
Strengthens Rock, Ground, and Steel moves to 1.3× their power during a sandstorm. Protects against sandstorm damage.





















Special
Status
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