Underwater Ruins
The Underwater Ruins are an area of the game that Tidus and Rikku explore very early on in the story.
This is an area that you cannot revisit later on, but there’s nothing that you can miss while here. Check out the walkthrough and strategy guide for additional information:
3) Ruins
Walkthrough Guide
Tidus’ arrival at the hall, the Al Bhed Salvage Ship and the Underwater Ruins.