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Counter guide · Water · Gen I

What beats Horsea?

The 5 hardest counters to Horsea ranked by type effectiveness, base-stat total, and Speed. Zekrom outspeeds and hits for 2× with electric-type STAB.

Horsea
No. 116
Horsea
Water
BST 295 · Speed 60 · Atk 40 · SpA 70

Top 5 counters

  1. #1
    Zekrom
    No. 644
    Zekrom
    Dragon Electric
    Hits Horsea for 2× via electric-type STAB Takes ½× back from water-type STAB Speed: 90 > 60 (outspeeds) Lean: Physical (Atk 150)
  2. #2
    Miraidon
    No. 1008
    Miraidon
    Electric Dragon
    Hits Horsea for 2× via electric-type STAB Takes ½× back from water-type STAB Speed: 135 > 60 (outspeeds) Lean: Special (SpA 135)
  3. #3
    Kartana
    No. 798
    Kartana
    Grass Steel
    Hits Horsea for 2× via grass-type STAB Takes ½× back from water-type STAB Speed: 109 > 60 (outspeeds) Lean: Physical (Atk 181)
  4. #4
    Raging Bolt
    No. 1021
    Raging Bolt
    Electric Dragon
    Hits Horsea for 2× via electric-type STAB Takes ½× back from water-type STAB Speed: 75 > 60 (outspeeds) Lean: Special (SpA 137)
  5. #5
    Flapple
    No. 841
    Flapple
    Grass Dragon
    Hits Horsea for 2× via grass-type STAB Takes ¼× back from water-type STAB Speed: 70 > 60 (outspeeds) Lean: Physical (Atk 110)

Horsea's type weaknesses

2× weak to
Grass Electric

How this list is computed

Each candidate is scored on best-STAB damage into Horsea, the damage taken back, Speed comparison, base-stat total, and offensive lean (Attack vs Sp. Attack). Candidates that Horsea hits super-effectively for 2× or more without taking comparable damage back are filtered out — they die first. Type-immune candidates are excluded entirely.

Counters are theoretical type-chart matchups, not damage calculations. Item, ability, and move-set choices can swing real battles. Use this list as a starting point, not a final answer.