Where to find Octillery in HeartGold & SoulSilver

Walk: Pokéwalker

Octillery also appears in

How to get Octillery in HeartGold & SoulSilver

Its base catch rate is 75 out of 255 (higher is easier); the catch rate calculator works out your odds with each ball. For the look, the best colour match is Timer Ball, Sport Ball or Poké Ball.

Evolution: Remoraid → Octillery (Level 25).

Octillery in every game · Pokémon HeartGold & SoulSilver interactive map (Johto & Kanto)