I hope they add a rebreather like the draeger scuba gear, they way you swim is fine but the enemies in that area are low enemy, so they wont spot you,'

Level 3-5 skull areas, they should have search lights that will detect you when you are in stealth swim
So it would be cool if they added the Draeger scuba gear , it should be under the skill tree when you unlock all of the skills
http://www.americanspecialops.com/eq...L-diving-gear/