Final Fantasy Wiki
MP 42
Effect Evasion down in area.
Casting Time 5 sec
Recast Time 120 sec
Magic Type Blue Magic
Element Ice
Jobs BLU 65

Infrasonics is a Blue Mage skill in Final Fantasy XI learned from Lizards. It lowers the evasion of enemies within a fan-shaped area originating from the caster. It costs 4 Blue Magic Points to set. When set, it grants INT +1. It takes 5 seconds to cast and can be recast every 120 seconds.

Infrasonics is also an enemy ability used by the Lizard family.


Infrasound, sometimes referred to as low-frequency sound, is sound that is lower in frequency than 20 Hz or cycles per second, the "normal" limit of human hearing.