Underwater spells?

[root.tar]

As I remember there are no official rules for spellcasting underwater. Is this right?

Does one need water breath for verbal spells?

Concentration checks?

Do the spells have different area of effects?

Thanks for help.

 

[Infiniti2000]

There are some rules, just not many.

http://www.d20srd.org/srd/wilderness.htm#underwaterCombat

They just concern "Spells or spell-like effects with the fire descriptor" and "supernatural fire effect":

Fire

Nonmagical fire (including alchemist’s fire) does not burn underwater. Spells or spell-like effects with the fire descriptor are ineffective underwater unless the caster makes a Spellcraft check (DC 20 + spell level). If the check succeeds, the spell creates a bubble of steam instead of its usual fiery effect, but otherwise the spell works as described. A supernatural fire effect is ineffective underwater unless its description states otherwise. The surface of a body of water blocks line of effect for any fire spell. If the caster has made a Spellcraft check to make the fire spell usable underwater, the surface still blocks the spell’s line of effect.