you’re trained to maneuver in and around deep water.
Prerequisites: Swim 2 ranks, Survival 2 ranks
Benefit: You gain a +2 competence bonus on Survival, Spot, and Listen checks made while you’re in coastal terrain or a large body of water. Furthermore, when you plan an ambush in coastal, lakeshore, or riverbank terrain, your opponents’ spot and listen DCs are increased by 2. Finally, when you gain concealment bonus from being submerged, your level of concealment is considered to be 1 higher (e.g. if you actually have one-half concealment from standing in water, you gain the benefits of three-quarters concealment).