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Pokemon Ruby and Sapphire Phase 8: Seafloor Cavern

Rain Badge

The Seafloor Cavern requires Strength and Rock Smash. The boulder puzzles are the main friction point, so bring the correct HM users before entering.

Game Boy Advance Pokemon Ruby / Sapphire Phase 8 Rain Badge Seafloor Cavern, legendary crisis, Sootopolis, Wallace, and Waterfall. 08 / 10 Kyogre artwork Groudon artwork
By Damodar Sharma Updated May 28, 2026 Walkthrough

Phase 8 section 2 of 7

The Seafloor Cavern requires Strength and Rock Smash. The boulder puzzles are the main friction point, so bring the correct HM users before entering.

GuidePokemon Ruby and Sapphire PhasePhase 8 Section2/7

Seafloor Cavern

The Seafloor Cavern requires Strength and Rock Smash. The boulder puzzles are the main friction point, so bring the correct HM users before entering. If you reach a room that seems blocked, reset the boulders by leaving and re-entering the room.

Wild encounters include Zubat/Golbat lines and water/cave options depending on floor and method. The dungeon’s important job is story progression, not team building, so do not risk a core team member for a low-value catch.

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