Deep Diving

Deep Diving(Warrior, 1)
Ability: Constitution
Modifier: 0
A character with this proficiency can add 10 feet per round to his speed of descent when diving into the water, or from the surface. Thus, a character with the deep diving proficiency can descend 30 feet per round, plus modifiers for encumbrance, running start, and height. Likewise, a character with the deep diving proficiency can surface at a rate of 30 feet (not 20 feet)per round.ir breath for 2/3 their Constitution scores in rounds, not the 1/3allowed to most characters. Effects of exceeding the allotted time are the same, regardless of proficiency ratings.