Granted Power (Su): You have the supernatural ability to breathe water as if under the effect of a water breathing spell, for up to 1 minute per level. This effect occurs automatically as soon as it applies, lasts until it runs out or is no longer needed, and can operate multiple times per day (up to the total daily time limit).
Ocean Domain Spells
1 Endure Elements: Exist comfortably in hot or cold environments.
2 Sound Burst: Deals 1d8 sonic damage to subjects, might also stun them.
3 Water Breathing: Subjects can breathe underwater.
4 Freedom of Movement: Subject moves normally despite impediments.
5 Wall of Ice: Ice plane creates wall with 15 hp +1/level, or hemisphere can trap creatures inside.
6 Otiluke’s Freezing Sphere: Freezes water or deals cold damage.
7 Waterspout†: Waterspout you control picks up and damages foes.
8 Maelstrom†: Water vortex traps and damages creatures and objects.
9 Elemental Swarm: Summons multiple elementals.*
*Cast as a water spell only.
Source: Spell Compendium