
![]() |

In the magic rules, specifically pointing at the polymorph school, it states that if you change to a form that has a swim speed you can breathe underwater (and if you get a burrow speed you can breathe in the ground) - I don't think it says anything about changing your subtype and you still can breathe air.

RuyanVe |

Nowhere.
Also, your type as a wild shaped druid stays humanoid (or whatever), it doesn't change since you only assume the form of an animal, you do not become one (see text for beast shape spells).
In the Magic section under Transmutation/Polymorph it is merely stated that
If the form grants a swim or burrow speed, you maintain the ability to breathe if you are swimming or burrowing
.
Ruyan.

RuyanVe |

Also: found in the rules section of this forums this comment by Jason Bulmahn can be found.
Ruyan.

![]() |

As a side note, this means you can breath water even if the form you take with a polymorph spell can't, assuming the creature has a swim speed.
For example, if you used alter self to take the form of a lizardfolk, your subtype doesn't change, and you can breathe underwater because the form has a 15' swim speed.