Type matchups and best counters for Horsea in Pokémon Polished Crystal. Learn which Pokémon can effectively counter Horsea and what types to use against it.
Types that deal increased damage to Horsea. Use these types to counter it effectively.
Types that Horsea resists or is immune to. Avoid using these types against it.
Pokémon that have type advantages against Horsea, either offensively or defensively.