Sea Route 21 — Pokémon Red & Blue

Every wild Pokémon here, by encounter method.

Sea Route 21 lists 12 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:

Grass Lv 21-32

Rattata30% · Lv 21-23Pidgey30% · Lv 21-23Raticate15% · Lv 30Pidgeotto15% · Lv 30-32Tangela10% · Lv 28-32

Surf Lv 5-40

Tentacool100%

Old Rod Lv 5

Magikarp100%

Good Rod Lv 10

Goldeen50%Poliwag50%

Super Rod Lv 15

Staryu25%Horsea25%Shellder25%Goldeen25%

Open in the interactive guide