An undine with this racial trait gains fast healing 2 for 1 round anytime she submerges completely within a body of natural salt water, fresh water, or brackish water. Stagnant, poisoned, or trapped water (such as an artificial pit or a bag of holding) does not activate this ability. The undine can heal up to 2 hit points per level per day with this ability, after which it ceases to function. This racial trait replaces water affinity.
