The material below is Open Game Content from a 3PP Source
School transmutation; Level alchemist 3, cleric 3, druid 3, magus 3, sorcerer/wizard 3
Casting Time 1 standard action
Components V, S, M/DF (short reed or piece of straw)
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.