Ula'ula Isle — Pokémon Heart & Soul
Every wild Pokémon here, by encounter method.
Ula'ula Isle lists 19 Pokémon across 5 encounter methods (grass, surf, old rod, good rod, and more), between level 43 and 45. 3 of them are on no other route's wild tables in this guide: Tangrowth, Octillery, Cloyster.
Opens up at Beat Leader Blue — Viridian City Gym, badge 16. 4 trainers here: