Oxyale

Oxyale is a key item in Final Fantasy. It is a chalice with a water-like liquid that allows the Warriors of Light to breathe underwater, allowing them to explore the Sunken Shrine.

To obtain Oxyale, the warriors must buy the Faerie's Bottle and take it to the Fairy's Spring in Gaia. Once the Faerie is released, she gives the warriors Oxyale as an award for being rescued.

Profiles

 * Nintendo Power volume 17 (page 56): "Available only from the Fairy's Spring in Gaia, and from the hands of the Fairy herself, Oxyale is used to provide fresh air in the submarine."