Water Breathing(Player's Handbook v.3.5, p. 300)
Level: Cleric 3, Shugenja 3 (Water), Spellthief 3, Gnome Artificer 3, Court Herald 3, Savant 3 (Divine), Sha'ir 3, Wu Jen 3 (Water), Wizard 3, Sorcerer 3, Druid 3, Apostle of Peace 3, Water 3, Ocean (SpC) 3,
Components: V, S, M, DF,
Casting Time: 1 standard action
Target: Living creatures touched
Duration: 2 hours/level; see text
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)
The transmuted creatures can breathe water freely. Divide the duration evenly among all the creatures you touch.
The spell does not make creatures unable to breathe air.
Arcane Material Component: A short reed or piece of straw.