Aetherfloods - Final Fantasy XVI Database

In-game Description

Pools of concentrated aether that form on the land’s surface, thought to be caused by an imbalance in its diffusion beneath. Though aether is usually invisible, at flood-level concentrations it takes on a blue glow. Those with a natural aetherial tolerance can survive exposure to a flood, at least for a short time, but most living things will eventually succumb to its effects, losing their minds and turning Akashic.