Route 103 is located at the north of Oldale Town and west of Route 110. If you can't find Prof. Birch's child in his lab or house, he is probably here to do his fieldwork. After you become the champion of the Pokémon League, a new cave Altering Cave will be unlocked (Pokémon Emerald only) and will be next to the water bodies (east).
Pokémon Appearances
Ruby/Sapphire
| Pokémon | Habitat | Rarity |
| Poochyena | Grass | Uncommon |
| Wingull | Grass | Common |
| Zigzagoon | Grass | Common |
| Magikarp | Fishing (Old Rod, Good Rod) | Common |
| Pelipper | Water | Rare |
| Sharpedo | Fishing (Super Rod) | Common |
| Tentacool | Water | Common |
| Tentacool | Fishing (Old Rod, Good Rod) | Uncommon |
| Wailmer | Fishing (Good Rod) | Uncommon |
| Wailmer | Fishing (Super Rod) | Common |
| Wingull | Water | Uncommon |
Emerald
| Pokémon | Habitat | Rarity |
| Poochyena | Grass | Common |
| Wingull | Grass | Uncommon |
| Zigzagoon | Grass | Uncommon |
| Magikarp | Fishing (Old Rod, Good Rod) | Common |
| Pelipper | Water | Rare |
| Sharpedo | Fishing (Super Rod) | Common |
| Tentacool | Water | Common |
| Tentacool | Fishing (Old Rod, Good Rod) | Uncommon |
| Wailmer | Fishing (Good Rod) | Uncommon |
| Wailmer | Fishing (Super Rod) | Common |
| Wingull | Water | Uncommon |
Items
| Items | Amount |
| Cheri Berry | 4 |
| Leppa Berry | 2 |
| Guard Spec. | 1 |
| PP Up | 1 |
Events
Battle with Prof. Birch's Child
Prof. Birch's child is waiting for a battle in Route 103. This will be the first battle for you against a trainer. This is the first battle between you and your rival.
Prof. Birch's child uses a different Pokémon in the battle depending on which Pokémon you selected from the Professor after the rescue in Littleroot Town. If you choose Torchic, look out for Mudkip. If you choose Mudkip, look out for Treecko. If you choose Treecko, look out for Torchic.
Tips
After you acquire HM03 Surf, you can access the water to the east in Route 103 and easily access both Mauville City and Slateport City via Route 110.
| Hoenn | |
|---|---|
Towns Littleroot Town · Oldale Town · Dewford Town · Verdanturf Town · Lavaridge Town · Fallarbor Town · Pacifidlog Town | |
Caves, Tunnels & Mountains Rusturf Tunnel · Island Cave · Granite Cave · Desert Ruins · Jagged Pass · Fiery Path · Mt. Chimney · Meteor Falls · Scorched Slab · Ancient Tomb · Mt. Pyre · Shoal Cave · Aqua Hideout · Magma Hideout · Seafloor Cavern · Cave of Origin · Sky Pillar · Victory Road · Sealed Chamber · Artisan Cave E · Desert Underpass E · Marine Cave E · Terra Cave E | |
Forests Petalburg Woods | |
Place of Interest Devon Corporation · Oceanic Museum · New Mauville · Mirage Tower · Weather Institute · Safari Zone · Mirage Island · Battle Tower RSE · Trainer Hill E · Abandoned Ship RSE · Battle Maison ORAS · Battle Resort ORAS · Mirage Spots ORAS · Sea Mauville ORAS | |
| Kanto (Sevii Islands) · Johto · Hoenn · Sinnoh (Battle Zone) · Unova · Kalos · Alola · Galar (Isle of Armor · Crown Tundra) |
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