Your reservoir of magic allows you to breathe normally even underwater.
Prerequisite(s): Ability to cast 3rd-level spells, Elemental Focus (Water).
As long as you have an elemental (water) spell of 3rd level or higher in your known spells and have at least 3 MP in your MP pool, you can breathe normally in both air and water. This supernatural quality requires no activation. As a secondary benefit, you gain a +1 competence bonus to your caster level when casting elemental (water) spells.