Feats for Underwater Combat?

[Splendor]

Are there any feats that help out in underwater combat?
Feats a human could take (not feats for an already aquatic creature).

[_Ozy_]

If you're an alchemist, underwater demolition lets you throw bombs underwater.

[Vanlo Dariav]

There's at least one in the new Melee Tactics Toolbox, though I don't have the book yet so can't say if there's more.

http://www.d20pfsrd.com/feats/combat-feats/aquatic-combatant-combat

[mplindustries]

There's pretty much just the aforementioned Aquatic Combatant, but since it removes all attack penalties and all damage penalties for slashing weapons, how much more could you want? Just get a way to breath underwater and you're set.