Whirl Islands (area 3 of 4) — Pokémon SoothingSilver
Every wild Pokémon here, by encounter method.
Whirl Islands (area 3 of 4) lists 13 Pokémon across 11 encounter methods (grass, surf, old rod, good rod, and more), between level 10 and 40.
Opens up at 4 badges — Fog (Morty, Ecruteak).