There are several different types of full face masks, so you begin learning about varying mask features and components. Next, you learn techniques for preparing and diving with a full face mask as well as proper maintenance. During a confined water dive, you get comfortable using your mask and practice skills in preparation for your open water dives. In open water, during two dives, you'll demonstrate your ability to:
- Properly prepare and check your mask for the dive.
- Make adjustments underwater and clear water out of the mask.
- Respond to simulated out-of-gas emergency situations.