Though you may not naturally be adept in water, through trial and error you have become a natural swimmer and can survive in water far easier than others of your kind.

 By taking this feat, you gain a swimming speed up to your walking speed. 

Additionally when you take this feat, you can hold your breath underwater for a number of minutes up to your main ability modifier for your chosen class as opposed to your constitution modifier for a minimum of 30 seconds (6 rounds).