Aeolus Seed

The Aeolus Seed is a blue berry-like fruit, which grows natively in the forests of Hazma. The native people have found that the berry can be used to breath underwater. However, the day after use it causes uncontrollable burping as a side-effect.

Story
Evann and his team use the seed to access the Aqua Ruins deep underwater in Tsunami Trough.