You're right, I didn't read into the Regeneration that closely. I suppose I could choose a more interesting base race that has a natural swim speed.
Alright, so which book did the Shadow Sun Ninja capstone come from? It would be hilliarous to have a daywalker in my campain. The party has dealt with every B rated Horror movie monster so far, including their fair share of vamps. I was also thinking of letting him multiclass into Master Vampire from the book of undead.