I picked up elemental protection with my advancement.<br/><br/><div class="quoteheader"><div class="topslice_quote">Quote from: Elemental Protection:</div></div><blockquote class="bbc_standard_quote">The mage is only protected against the effects of her element, so a<br/>water elementalist can breathe underwater while<br/>a fire mage might walk through fire. Earth mages<br/>cannot be crushed (but could suffocate), while air<br/>mages can breathe without air, in poison gas, etc.</blockquote><div class="quotefooter"><div class="botslice_quote"></div></div><br/>It's a little vague but I think it means protected from water attacks/effects and can breathe underwater as a permanent skill.