drag under (3 swimming SP effect, requires wrestling): +2 to wrestling attacks while in the water.
drown (2 swimming SP effect, requires wrestling): Damaging wrestling attacks do 2 damage instead of 1 in the water.
submerge (2 swimming SP effect): +2 to stalking in the water.
dive (1 swimming SP effect): +1 to defense and swimming while evading in water.
hold breath (1 swimming SP effect): You have +2 to defense against wrestling attacks that deal damage.
diving ( swimming SP): You can hold your breath a long time and retrieve stuff from deep water.