Benefits: This is a skill feat that scales with your ranks in Swim. * 0 ranks: You gain +3 to your Swim checks. * 4 ranks: You gain a swim speed equal to your base land speed, with the attendant benefits. You don't take armor check penalties to your Swim checks. * 9 ranks: You can breathe water, and you can attack through water as if under the effects of freedom of movement. * 14 ranks: While underwater, you can substitute Swim checks for Reflex saves, and you gain a +4 bonus to attack and damage rolls. * 19 ranks: As a swift action, you can add your ranks in Swim as a dodge bonus to your Armor Class while under water.