Waterbreathing

Waterbreathing
Caster Level(s): Drd 3, Sor / Wiz 3, Water 2 Innate Level: 3 School: Transmutation Components: Verbal, Somatic Range: Touch Area: Living Creatures Touched Duration: 2 hours/level (see text) Saving Throw: None (harmless) Spell Resistance: No (harmless)

The transmuted creatures can breathe underwater. The duration is evenly divided among all the creatures you touch. This spell does not make creatures unable to breathe air if they do so normally and doesn't remove any of the other restrictions or hazards faced underwater and is subject to dispelling magic.

(This allows you to go into underwater areas without drowning)

Gameplay Notes
This should also protect against 'drown' spells.