Swim: Undine have a swim speed of 30 and gain the +8 racial bonus on Swim checks that a swim speed normally grants.
Water Child: Undine gain +4 racial bonus on Swim checks and can always take 10 while swimming.
Camouflage: Undine gain a +4 racial bonus on Stealth checks in water terrain.
Amphibious: Undine are amphibious and can breathe both air and water.
Deepsight: Undine can see in the dark up to 37 meters while underwater.
Slapping Tail: Undine have a tail they can use to make attacks of opportunity with a reach of 1 meter. The tail is a natural attack that deals 1d8 points of damage plus the creature's strength modifier.