Marine Cave Emerald · Dungeon

Map of Marine Cave in Pokémon Emerald — Underwater entrance (in-game map)

Marine Cave is the post-game home of Kyogre. It appears only after the Hall of Fame, when a scientist on the 2F of the Weather Institute on Route 119 reports heavy rain over Route 105, 125, 127 or 129. On that route, Dive into the patch of dark, rough water to find the cave, and Kyogre waits at the end at Lv70.

Wild Pokémon: None
Items: 0
Trainers: 0
HMs: Surf, Dive

Connects to: Route 105 · Route 125 · Route 127 · Route 129

Where Marine Cave is on the Hoenn map Marine Cave on the Hoenn map

Gift and special Pokémon

Kyogre Lv. 70 · One-off encounter · End

After the Hall of Fame, the scientist on 2F of the Weather Institute tells you which route has heavy rain; Marine Cave appears underwater there (Dive down).

Wild Pokémon

No wild Pokémon here.

Items

No items to pick up here.

Tips

Talk to the scientist on the Weather Institute's 2F after the Hall of Fame to learn which route has the rain.
Head there promptly; if you wander elsewhere for too long, the abnormal weather can move on.
Kyogre is Lv70 and is gone for good if you knock it out, so save before the battle.
If the scientist reports a drought instead, that is Groudon's Terra Cave. Catch Groudon first and the next report will lead to Kyogre.

Walkthrough: Part 18: Post-game: Battle Frontier and Legendaries

More maps

Marine Cave: Marine Cave entrance — Marine Cave entrance

Marine Cave: Kyogre's chamber — Kyogre's chamber

FAQ

How do you find Kyogre in Pokémon Emerald?

After the Hall of Fame, ask the scientist on the Weather Institute's 2F where heavy rain is falling. Dive into the dark water on that route to enter Marine Cave.

Where can Marine Cave appear in Emerald?

On Route 105, 125, 127 or 129.

What level is Kyogre in Emerald?

Lv70.

Sources & picture credits

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).