Seafloor Cavern Emerald · Dungeon
Seafloor Cavern lies beneath Route 128, and you reach it by diving down after Steven gives you HM08 Dive in Mossdeep. Team Aqua have moored their stolen submarine there, and the cavern is a string of rooms with Strength and Rock Smash puzzles. In the last room Archie tries to control Kyogre with the Red Orb, and Kyogre wakes and leaves to cause the downpour over Sootopolis.
- Wild Pokémon
- 5
- Items
- 1
- Trainers
- 7
- HMs
- Surf, Dive, Strength, Rock Smash
Connects to: Route 128
Seafloor Cavern on the Hoenn map
Wild Pokémon
Entrance
| Pokémon | Type | Lv. | Chance |
|---|---|---|---|
 Tentacool | WaterPoison | 5–35 | 60% |
 Zubat | Poison | 5–35 | 35% |
 Golbat | Poison | 30–35 | 5% |
| Rod | Pokémon | Lv. | Chance |
|---|---|---|---|
| Old Rod |  Magikarp | 5–10 | 70% |
| Tentacool | 5–10 | 30% | |
| Good Rod | Magikarp | 10–30 | 60% |
| Tentacool | 10–30 | 20% | |
 Wailmer | 10–30 | 20% | |
| Super Rod | Wailmer | 20–45 | 100% |
Room 1, Room 2, Room 3, Room 4, Room 5, Room 8
Room 6, Room 7
| Pokémon | Type | Lv. | Chance |
|---|---|---|---|
| Tentacool | WaterPoison | 5–35 | 60% |
| Zubat | Poison | 5–35 | 35% |
| Golbat | Poison | 30–35 | 5% |
| Rod | Pokémon | Lv. | Chance |
|---|---|---|---|
| Old Rod | Magikarp | 5–10 | 70% |
| Tentacool | 5–10 | 30% | |
| Good Rod | Magikarp | 10–30 | 60% |
| Tentacool | 10–30 | 20% | |
| Wailmer | 10–30 | 20% | |
| Super Rod | Wailmer | 20–45 | 100% |
Chances are the game’s encounter slots (grass and caves 20/20/10/10/10/10/5/5/4/4/1/1, surfing, diving and Rock Smash 60/30/5/4/1, Old Rod 70/30, Good Rod 60/20/20, Super Rod 40/40/15/4/1). Emerald has no time-of-day encounters. Where to find every Pokémon.
Trainers
| Trainer | Pokémon | Prize | Where |
|---|---|---|---|
 Team Aqua Grunt |  Poochyena 36PokéNav rematches (4)Rematch 1 · ¥720  Carvanha 36Rematch 2 · ¥720 Zubat 36Rematch 3 · ¥720 Carvanha 36Rematch 4 · ¥700  Mightyena 35Golbat 35 | ¥720 | Room 1 |
| Team Aqua Grunt | Carvanha 36 | ¥720 | Room 1 |
 Aqua AdminShelly |  Sharpedo 37Mightyena 37 | ¥1,480 | Room 3 |
| Team Aqua Grunt | Mightyena 35Golbat 35 | ¥700 | Room 3 |
| Team Aqua Grunt | Zubat 36 | ¥720 | Room 4 |
 Team Aqua Grunt | Carvanha 36 | ¥720 | Room 4 |
Prize money is four times the level of the trainer’s last Pokémon times the trainer class’s base rate (doubled in double battles). Trainers with rematches call you on the PokéNav’s Match Call when they want to battle again.
Items
| Item | How |
|---|---|
| TM26 Earthquake | Item ball |
Hidden items can be found with the Itemfinder.
Tips
- Bring Strength and Rock Smash users: several rooms are boulder puzzles, and a boulder pushed into the wrong place can block your route until you leave the room.
- Aqua Admin Shelly waits in Room 3 with Sharpedo 37 and Mightyena 37 and pays ¥1480.
- Archie's team is Mightyena 41, Crobat 41 and Sharpedo 43; an Electric type handles Sharpedo and Crobat well.
- Pick up TM26 Earthquake in Room 9, the final chamber.
- Zubat (90%) and Golbat (10%) are the only wild Pokémon on foot, so carry Repels.
Walkthrough: Part 14: Shoal Cave and Seafloor Cavern
More maps
FAQ
How do you get into the Seafloor Cavern in Pokémon Emerald?
Surf to Route 128, Dive into the deep water and follow the underwater passage to the cavern entrance.
What team does Archie use in Emerald?
At Seafloor Cavern, Archie uses Mightyena 41, Crobat 41 and Sharpedo 43.
Where is TM26 Earthquake in Emerald?
In Room 9 of Seafloor Cavern, the room where you battle Archie.
What Pokémon can you catch in Seafloor Cavern in Emerald?
5 species: Tentacool, Zubat, Golbat, Magikarp, Wailmer.
Sources & picture credits
- Seafloor Cavern (Bulbapedia)
- pret/pokeemerald (decompiled game data)
- Map: Seafloor_Cavern_exterior_RSE.png
- Map: Seafloor_Cavern_entrance_E.png
- Map: Seafloor_Cavern_R1_E.png
- Map: Seafloor_Cavern_R2_E.png
- Map: Seafloor_Cavern_R3_E.png
- Map: Seafloor_Cavern_R4_E.png
- Map: Seafloor_Cavern_R5_E.png
- Map: Seafloor_Cavern_R6_E.png
- Map: Seafloor_Cavern_R7_E.png
- Map: Seafloor_Cavern_R8_E.png
- Map: Seafloor_Cavern_boulder_puzzle_RSE.png
- Map: Seafloor_Cavern_end_E.png
Guide text is original retrogameindex writing, checked against Bulbapedia and the game data. Wild Pokémon and encounter chances, items, trainers, rematch teams, gifts, trades and shops come from the pret/pokeemerald decompilation. Maps and sprites © Nintendo / Creatures / GAME FREAK, archived from the Bulbagarden Archives; the Hoenn map is drawn from the game’s own PokéNav map graphics (listed on the image gallery).