Route 20 Underwater — Pokémon FireRed & LeafGreen+

Every wild Pokémon here, by encounter method.

Route 20 Underwater lists 8 Pokémon across 2 encounter methods (dive, dive), between level 12 and 40.

Opens up at Marsh Badge — the sea routes and Cinnabar Island.

Dive Lv 12-40

Tentacool35% · Lv 33-40Horsea30% · Lv 22-25Krabby20% · Lv 12-15Gyarados5% · Lv 25Seadra9% · Lv 28-35Psyduck1% · Lv 33-35

Dive Lv 12-40

Tentacool35% · Lv 33-40Krabby30% · Lv 22-25Horsea20% · Lv 12-15Gyarados5% · Lv 25Kingler9% · Lv 28-35Slowpoke1% · Lv 33-35

Items found here

• Big Pearl (hidden) — A quite-large pearl that sparkles in a pretty silver color. It can be sold at a high price.

Open in the interactive guide