• The universal scuba diving code for “all is well” is the three finger pose (like the one WWE’s John Cena made famous). A raised thumb indicates direction, and you could move it upwards, downwards or to your sides to suggest the direction you wish to move in. A closed fist suggests a lurking danger, and if you are out of oxygen, run your thumb across the neck region as if you were slitting it (like the signature pose of WWE’s Undertaker). At this point, your diving instructor will either inflate your life jacket or lend you his/her secondary pipe (also known as buddy pipe) so that you can continue to breath as you swim to safety.