Dungeon where you will fight the legendary Pokémon Kyogre. Obtainable by beating the game, you should see Medicham near your base. He'll say something about Lombre: go talk to him then to Whiscash who will give you dive and the location Stormy Sea.
- Stormy Sea has 40 floors.
- Unlike all the other legendary Pokémon dungeons, Stormy Sea will not have a rest area where you can save before battling the legendary so it makes that much harder.