During the equipment and safety briefing you will learn about how your body reacts to water pressure and how to deal with it.
You will also be taught to identify and handle any difficulties while you are in the water (e.g. how to clear your mask or regulator).
We will also teach you the various hand signals used by SCUBA divers whilst underwater. This is not only important during emergencies but it will also allow other divers to communicate with you if they come across something interesting (e.g. a turtle swimming idly by or a family of Clown fishes).