Where to find Marill in Ruby, Sapphire & Emerald

Surf: Petalburg City (100%), Hoenn Route 102 (99%), Hoenn Route 111 (99%) + 4 more
Walk: Hoenn Route 112 (25%, Emerald only), Hoenn Route 104 (20%, Emerald only), Hoenn Route 120 (15%) + 1 more

• Petalburg City — Surf
• Route 102 — Surf
• Route 104 — Walk
• Route 111 — Surf
• Route 112 — Walk
• Route 114 — Surf
• Route 117 — Surf, Walk
• Route 120 — Surf, Walk
• Safari Zone (Expansion South) — Surf

Marill in every game · Pokémon Ruby, Sapphire & Emerald interactive map (Hoenn)