Essentials
Abilities
- Swift Swim
Doubles Speed during rain.
- Sniper
Strengthens critical hits to inflict 3× damage rather than 2×.
Hidden Ability
- Damp
Prevents Selfdestruct, Explosion, and Aftermath from working while the Pokémon is in battle.
Damage Taken
Pokédex Numbers
- Introduced in

- National
- 116
- Kanto
-
116




- Original Johto
-
186


- Hoenn
-
184


- Updated Johto
-
190

Names
- German

- Seeper
- Chinese

- 墨海馬
- French

- Hypotrempe
- Korean

- 쏘드라
- Japanese

- タッツー (tattsuu)
- Official roomaji

- Tattu
Breeding
Compatibility
Evolution
| Baby | Basic | Stage 1 | Stage 2 |
|---|---|---|---|
| Horsea | Seadra Level up, starting at level 32 | Kingdra Trade, while holding a Dragon Scale |
Stats
| Pctile | Min IVs | Max IVs | ||
|---|---|---|---|---|
| HP | 2.6 | 233 | 264 | |
| Attack | 10.2 | 148 | 179 | |
| Defense | 54.6 | 208 | 239 | |
| Special Attack | 56.2 | 208 | 239 | |
| Special Defense | 1.8 | 118 | 149 | |
| Speed | 43.6 | 188 | 219 | |
| Total | 13.5 |

Pokéathlon Performance
Minimum;
Base;
Maximum
- Speed




- Power



- Skill



- Stamina



- Jump



- Total
- 8/12/16
Flavor
Flavor Text

-



It makes its nest in the shade of corals. If it senses danger, it spits murky ink and flees.

If attacked by a larger enemy, it quickly swims to safety by adeptly controlling its well-developed dorsal fin.

Its big, developed fins move rapidly, allowing it to swim backward while still facing forward.

-




It makes its nest in the shade of corals. If it senses danger, it spits murky ink and flees.
Sprites
Height
1'3.7"
0.4 m
Weight
17.6 lb
8.0 kg
Locations
- Red

-
- Blue

- Yellow

- Ruby

- Sapphire

- Emerald

- FireRed

-
- Bond Bridge
- Cerulean City
- Cinnabar Island
- Five Island
- Five Isle Meadow
- Green Path
- Icefall Cave, waterfall
- Kindle Road
- Memorial Pillar
- One Island
- Outcast Island
- Pallet Town
- Resort Gorgeous
- Route 10
- Route 11
- Route 12
- Route 13
- Route 19
- Route 20
- Route 21
- Route 24
- Route 4
- S.S. Anne
- Seafoam Islands, B3F
- Seafoam Islands, B4F
- Tanoby Ruins
- Trainer Tower
- Treasure Beach
- Vermillion City
- Water Labyrinth
- Water Path
- Bond Bridge
- Cerulean City
- Cinnabar Island
- Five Island
- Five Isle Meadow
- Green Path
- Icefall Cave, waterfall
- Kindle Road
- Memorial Pillar
- One Island
- Outcast Island
- Pallet Town
- Resort Gorgeous
- Route 10
- Route 11
- Route 12
- Route 13
- Route 19
- Route 20
- Route 21
- Route 24
- Route 4
- S.S. Anne
- Seafoam Islands, B3F
- Seafoam Islands, B4F
- Tanoby Ruins
- Trainer Tower
- Treasure Beach
- Vermillion City
- Water Labyrinth
- Water Path
- LeafGreen

-
- Diamond

- Pearl

- Platinum

- HeartGold

- SoulSilver

- Black

- White

- Black 2

- White 2

Pal Park
- Area
- Sea
- Score
- 50
- Rate
- 30
Moves
Water moves get STAB, and have their type highlighted in green.
Special moves better suit Horsea's higher Special Attack, and have their class highlighted in green.
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Move | Type | Class | PP | Power | Acc | Pri | Effect |
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| Level up: Learned when a Pokémon reaches a certain level. | |||||||||||||
| — | — | — | — | — | — | Bubble | ![]() |
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30 | 20 | 100% | Has a 10% chance to lower the target's Speed by one stage. |
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| 19 | 8 | 8 | 4 | 4 | 4 | SmokeScreen | ![]() |
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20 | — | 100% | Lowers the target's accuracy by one stage. |
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| 24 | 15 | 15 | 8 | 8 | 8 | Leer | ![]() |
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30 | — | 100% | Lowers the target's Defense by one stage. |
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| 30 | 22 | 22 | 11 | 11 | 11 | Water Gun | ![]() |
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25 | 40 | 100% | Inflicts regular damage with no additional effect. |
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| 14 | 14 | 14 | Focus Energy | ![]() |
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30 | — | — | Increases the user's chance to score a critical hit. |
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| 18 | 18 | 18 | BubbleBeam | ![]() |
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20 | 65 | 100% | Has a 10% chance to lower the target's Speed by one stage. |
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| 37 | 23 | 23 | 23 | Agility | ![]() |
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30 | — | — | Raises the user's Speed by two stages. |
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| 29 | 29 | 26 | 26 | 26 | Twister | ![]() |
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20 | 40 | 100% | Has a 20% chance to make the target flinch. |
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| 36 | 36 | Agility | ![]() |
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30 | — | — | Raises the user's Speed by two stages. |
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| 30 | 30 | 30 | Brine | ![]() |
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10 | 65 | 100% | Has double power against Pokémon that have less than half their max HP remaining. |
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| 45 | 43 | 43 | 35 | 35 | 35 | Hydro Pump | ![]() |
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5 | 120 | 80% | Inflicts regular damage with no additional effect. |
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| 50 | 38 | 38 | 38 | Dragon Dance | ![]() |
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20 | — | — | Raises the user's Attack and Speed by one stage. |
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| 42 | 42 | 42 | Dragon Pulse | ![]() |
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10 | 90 | 100% | Inflicts regular damage with no additional effect. |
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Move | Type | Class | PP | Power | Acc | Pri | Effect |
| Egg: Appears on a newly-hatched Pokémon, if the father had the same move. | |||||||||||||
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Aurora Beam | ![]() |
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20 | 65 | 100% | Has a 10% chance to lower the target's Attack by one stage. |
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Clear Smog | ![]() |
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15 | 50 | — | Removes all of the target's stat modifiers. |
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Disable | ![]() |
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20 | — | 100% | Disables the target's last used move for 1-8 turns. |
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Dragon Rage | ![]() |
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10 | * | 100% | Inflicts 40 points of damage. |
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DragonBreath | ![]() |
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20 | 60 | 100% | Has a 30% chance to paralyze the target. |
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Flail | ![]() |
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15 | * | 100% | Inflicts more damage when the user has less HP remaining, with a maximum of 200 power. |
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Muddy Water | ![]() |
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10 | 95 | 85% | Has a 30% chance to lower the target's accuracy by one stage. |
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Octazooka | ![]() |
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10 | 65 | 85% | Has a 50% chance to lower the target's accuracy by one stage. |
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Outrage | ![]() |
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10 | 120 | 100% | Hits every turn for 2-3 turns, then confuses the user. |
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Razor Wind | ![]() |
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10 | 80 | 100% | Requires a turn to charge before attacking. |
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Signal Beam | ![]() |
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15 | 75 | 100% | Has a 10% chance to confuse the target. |
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Splash | ![]() |
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40 | — | — | Does nothing. |
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Water Pulse | ![]() |
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20 | 60 | 100% | Has a 20% chance to confuse the target. |
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Move | Type | Class | PP | Power | Acc | Pri | Effect |
| Tutor: Can be taught at any time by an NPC. | |||||||||||||
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Bounce | ![]() |
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5 | 85 | 85% | User bounces high into the air, dodging all attacks, and hits next turn. |
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Dive | ![]() |
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10 | 80 | 100% | User dives underwater, dodging all attacks, and hits next turn. |
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Double-Edge | ![]() |
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15 | 120 | 100% | User receives 1/3 the damage inflicted in recoil. |
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Dragon Pulse | ![]() |
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10 | 90 | 100% | Inflicts regular damage with no additional effect. |
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Endure | ![]() |
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10 | — | — | 4 | Prevents the user's HP from lowering below 1 this turn. |
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Headbutt | ![]() |
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15 | 70 | 100% | Has a 30% chance to make the target flinch. |
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Ice Beam | ![]() |
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10 | 95 | 100% | Has a 10% chance to freeze the target. |
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Icy Wind | ![]() |
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15 | 55 | 95% | Has a 100% chance to lower the target's Speed by one stage. |
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Mimic | ![]() |
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10 | — | — | Copies the target's last used move. |
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Outrage | ![]() |
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10 | 120 | 100% | Hits every turn for 2-3 turns, then confuses the user. |
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Signal Beam | ![]() |
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15 | 75 | 100% | Has a 10% chance to confuse the target. |
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Sleep Talk | ![]() |
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10 | — | — | Randomly uses one of the user's other three moves. Only works if the user is sleeping. |
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Snore | ![]() |
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15 | 40 | 100% | Has a 30% chance to make the target flinch. Only works if the user is sleeping. |
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Substitute | ![]() |
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10 | — | — | Transfers 1/4 of the user's max HP into a doll, protecting the user from further damage or status changes until it breaks. |
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Swagger | ![]() |
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15 | — | 90% | Raises the target's Attack by two stages and confuses the target. |
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Swift | ![]() |
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20 | 60 | — | Never misses. |
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Twister | ![]() |
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20 | 40 | 100% | Has a 20% chance to make the target flinch. |
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Move | Type | Class | PP | Power | Acc | Pri | Effect |
| Machine: Can be taught at any time by using a TM or HM. | |||||||||||||
| 03 | 03 | 03 | Water Pulse | ![]() |
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20 | 60 | 100% | Has a 20% chance to confuse the target. |
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| 02 | Headbutt | ![]() |
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15 | 70 | 100% | Has a 30% chance to make the target flinch. |
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| 03 | Curse | ![]() |
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10 | — | — | Ghosts pay half their max HP to hurt the target every turn. Others decrease Speed but raise Attack and Defense. |
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| 06 | 06 | 06 | 06 | 06 | 06 | Toxic | ![]() |
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10 | — | 90% | Badly poisons the target, inflicting more damage every turn. |
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| 09 | Take Down | ![]() |
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20 | 90 | 85% | User receives 1/4 the damage it inflicts in recoil. |
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| 10 | Double-Edge | ![]() |
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15 | 120 | 100% | User receives 1/3 the damage inflicted in recoil. |
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| 11 | BubbleBeam | ![]() |
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20 | 65 | 100% | Has a 10% chance to lower the target's Speed by one stage. |
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| 12 | Water Gun | ![]() |
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25 | 40 | 100% | Inflicts regular damage with no additional effect. |
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| 07 | 07 | 07 | 07 | Hail | ![]() |
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10 | — | — | Changes the weather to a hailstorm for five turns. |
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| 10 | 10 | 10 | 10 | 10 | Hidden Power | ![]() |
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15 | * | 100% | Power and type depend upon user's IVs. Power can range from 30 to 70. |
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| 13 | Snore | ![]() |
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15 | 40 | 100% | Has a 30% chance to make the target flinch. Only works if the user is sleeping. |
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| 13 | 13 | 13 | 13 | 13 | Ice Beam | ![]() |
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10 | 95 | 100% | Has a 10% chance to freeze the target. |
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| 14 | 14 | 14 | 14 | 14 | 14 | Blizzard | ![]() |
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5 | 120 | 70% | Has a 10% chance to freeze the target. |
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| 20 | Rage | ![]() |
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20 | 20 | 100% | If the user is hit after using this move, its Attack rises by one stage. |
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| 31 | Mimic | ![]() |
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10 | — | — | Copies the target's last used move. |
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| 16 | Icy Wind | ![]() |
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15 | 55 | 95% | Has a 100% chance to lower the target's Speed by one stage. |
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| 17 | 17 | 17 | 17 | 17 | Protect | ![]() |
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10 | — | — | 4 | Prevents any moves from hitting the user this turn. |
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| 18 | 18 | 18 | 18 | 18 | Rain Dance | ![]() |
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5 | — | — | Changes the weather to rain for five turns. |
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| 20 | Endure | ![]() |
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10 | — | — | 4 | Prevents the user's HP from lowering below 1 this turn. |
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| 21 | 21 | 21 | 21 | 21 | Frustration | ![]() |
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20 | * | 100% | Power increases as happiness decreases, up to a maximum of 102. |
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| 24 | DragonBreath | ![]() |
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20 | 60 | 100% | Has a 30% chance to paralyze the target. |
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| 27 | 27 | 27 | 27 | 27 | Return | ![]() |
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20 | * | 100% | Power increases with happiness, up to a maximum of 102. |
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| 32 | 32 | 32 | 32 | 32 | 32 | Double Team | ![]() |
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15 | — | — | Raises the user's evasion by one stage. |
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| 42 | 42 | 42 | 42 | Facade | ![]() |
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20 | 70 | 100% | Power doubles if user is burned, paralyzed, or poisoned. |
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| 43 | 43 | 43 | Secret Power | ![]() |
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20 | 70 | 100% | Has a 30% chance to inflict a status effect which depends upon the terrain. |
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| 34 | Swagger | ![]() |
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15 | — | 90% | Raises the target's Attack by two stages and confuses the target. |
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| 35 | Sleep Talk | ![]() |
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10 | — | — | Randomly uses one of the user's other three moves. Only works if the user is sleeping. |
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| 34 | Bide | ![]() |
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10 | * | — | 1 | User waits for two turns, then hits back for twice the damage it took. |
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| 39 | 39 | Swift | ![]() |
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20 | 60 | — | Never misses. |
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| 40 | Skull Bash | ![]() |
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15 | 100 | 100% | Raises the user's Defense by one stage. User charges for one turn before attacking. |
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| 44 | 44 | 44 | 44 | 44 | 44 | Rest | ![]() |
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10 | — | — | User sleeps for two turns, completely healing itself. |
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| 45 | 45 | 45 | 45 | 45 | Attract | ![]() |
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15 | — | 100% | Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user. |
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| 55 | 55 | Brine | ![]() |
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10 | 65 | 100% | Has double power against Pokémon that have less than half their max HP remaining. |
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| 58 | 58 | Endure | ![]() |
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10 | — | — | 4 | Prevents the user's HP from lowering below 1 this turn. |
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| 59 | 59 | Dragon Pulse | ![]() |
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10 | 90 | 100% | Inflicts regular damage with no additional effect. |
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| 78 | 78 | Captivate | ![]() |
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20 | — | 100% | Lowers the target's Special Attack by two stages if it's the opposite gender. |
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| 82 | 82 | Sleep Talk | ![]() |
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10 | — | — | Randomly uses one of the user's other three moves. Only works if the user is sleeping. |
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| 83 | 83 | Natural Gift | ![]() |
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15 | * | 100% | Power and type depend on the held berry. |
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| 48 | Round | ![]() |
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15 | 60 | 100% | Has double power if it's used more than once per turn. |
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| 55 | Scald | ![]() |
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15 | 80 | 100% | Has a 30% chance to burn the target. |
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| 87 | 87 | 87 | Swagger | ![]() |
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15 | — | 90% | Raises the target's Attack by two stages and confuses the target. |
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| 50 | 90 | 90 | 90 | Substitute | ![]() |
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10 | — | — | Transfers 1/4 of the user's max HP into a doll, protecting the user from further damage or status changes until it breaks. |
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| 91 | 91 | 91 | Flash Cannon | ![]() |
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10 | 80 | 100% | Has a 10% chance to lower the target's Special Defense by one stage. |
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| H3 | H3 | H3 | H3 | H3 | H3 | Surf | ![]() |
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15 | 95 | 100% | Inflicts regular damage and can hit Dive users. |
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| H7 | H7 | H5 | Waterfall | ![]() |
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15 | 80 | 100% | Has a 20% chance to make the target flinch. |
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| H8 | H6 | Dive | ![]() |
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10 | 80 | 100% | User dives underwater, dodging all attacks, and hits next turn. |
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| H6 | H5 | Whirlpool | ![]() |
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15 | 35 | 85% | Prevents the target from leaving battle and inflicts 1/16 its max HP in damage for 2-5 turns. |
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| H7 | H7 | Waterfall | ![]() |
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15 | 80 | 100% | Has a 20% chance to make the target flinch. |
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½ male, ½ female
Dragon Scale
sea

Alvine



