Sea Route 21 — Pokémon Yellow
Every wild Pokémon here, by encounter method.
Sea Route 21 lists 10 Pokémon across 5 encounter methods (grass, surf, old rod, good rod, and more), between level 5 and 40.
Sea Route 21 in the official games
The original game's table for this area:
Pokémon CrystalPokémon FireRed & LeafGreenPokémon Gold & SilverPokémon HeartGold & SoulSilverPokémon Red & Blue
